Oxygen defects suppress superconductivity in the bilayer nickelate La${}_3$Ni${}_2$O${}_{7+\delta }$ via a dual mechanism, revealed through density functional theory, dynamical mean-field theory, and functional renormalization group analysis.

[Phys. Rev. Lett. 137, 126002] Published Tue Sep 15, 2026

We report ultrasound velocity measurements on an ultraclean ${\mathrm{UTe}}_2$ single crystal with $T_c>2\mathrm{K}$ for $H\parallel b$, performed up to 18 T and down to 0.33 K. The measurements provide the missing bulk thermodynamic evidence for an additional high-field phase boundary near ${\mu }_{0}H\sim 14–15\mathrm{T}$. A distinct, nonhysteretic …

[Phys. Rev. Lett. 137, 126003] Published Tue Sep 15, 2026

We study the effect of density-assisted hopping on different dimerized lattice geometries, such as bilayers and ladder structures. We show analytically that the density-assisted hopping induces an attractive interaction in the lower (bonding) band of the dimer structure and a repulsion in the upper …

[Phys. Rev. Lett. 137, 126004] Published Tue Sep 15, 2026

Patterning of precipitates along dislocation lines arising from nonequilibrium segregation during ion irradiation is investigated in model binary alloys. Lattice kinetic Monte Carlo simulations reveal that the competition between solute advection by point defects to the dislocation and thermal diffu…

[Phys. Rev. Lett. 137, 126201] Published Tue Sep 15, 2026

We construct a Hubbard model with a nearly flat band whose quantum geometry can be tuned independent of the energy dispersion and the Coulomb interaction. We show that, when the nearly flat band is half filled, the exact ground state of the model exhibits ferromagnetism and that this ferromagnetism …

[Phys. Rev. Lett. 137, 126502] Published Tue Sep 15, 2026

The Fermi-Hubbard model describes a large variety of condensed matter systems with spinful fermions and strong interactions. On the other hand, the Kitaev chain model deals with noninteracting spinless fermions and produces robust ground-state degeneracies that give rise to Majorana bound states. In…

[Phys. Rev. Lett. 137, 126503] Published Tue Sep 15, 2026

Berry curvature in twisted molybdenum ditelluride drives the oppositely charged particles in an exciton in opposite transverse directions, producing a dipole moment of approximately 150 Debye.

[Phys. Rev. Lett. 137, 126602] Published Tue Sep 15, 2026

Non-Hermitian Hamiltonians enrich quantum physics by extending conventional phase diagrams, enabling novel topological phenomena, and realizing exceptional points with applications in quantum sensing. Here, we present a programmable liquid-crystal-based photonic platform for implementing nonunitary …

[Phys. Rev. Lett. 137, 126603] Published Tue Sep 15, 2026

The non-Hermitian skin effect (NHSE), characterized by extensive boundary accumulation of eigenstates under open boundary conditions, has emerged as a central phenomenon in non-Hermitian physics. Established routes to the NHSE are usually based on Abelian nonreciprocal mechanisms, including an equiv…

[Phys. Rev. Lett. 137, 126605] Published Tue Sep 15, 2026

Topologically protected (anti)skyrmions are promising information carriers for next-generation spintronics. Their fractional counterparts, however, have so far been observed only in bound pairs or lattice states, leaving a major challenge for the stabilization and electrical manipulation of an isola…

[Phys. Rev. Lett. 137, 126704] Published Tue Sep 15, 2026

Sliding ferroelectrics possess vertical polarization via stackings of monolayer van der Waals (vdW) materials, exhibiting energy efficiency and ultrafast switching dynamics. Here, we uncover an intriguing polarization-switching behavior in bilayer BN, wherein the interlayer sliding is locked toward …

[Phys. Rev. Lett. 137, 126801] Published Tue Sep 15, 2026

Disorder-driven fluctuations enhance repulsive Coulomb interaction and form a superconducting dome in ionic-liquid-gated few-layer transition metal dichalcogenides.

[Phys. Rev. Lett. 137, 126001] Published Mon Sep 14, 2026

A Peierls-like interlayer instability establishes stacking as a tuning parameter for hidden, metastable phases in van der Waals quantum materials.

[Phys. Rev. Lett. 137, 126501] Published Mon Sep 14, 2026

The quantum metric encodes the geometric structure of Bloch wave functions and governs a wide range of physical responses. Its Brillouin-zone integral, the quantum weight, appears in the structure factor and provides lower bounds on observables such as the optical gap and dielectric constant. In sym…

[Phys. Rev. Lett. 137, 126601] Published Mon Sep 14, 2026

Magnetic skyrmions (MSks) and optical skyrmions (OSks) embody topology in matter and in light, respectively. Here we investigate the interaction between a single MSk and an OSk beam. Three distinct nonlinear dynamical modes are identified: rotation, skipping, and trochoidal motion. By decomposing th…

[Phys. Rev. Lett. 137, 126701] Published Mon Sep 14, 2026

Compensated magnets are of increasing interest for both fundamental research and applications, with their net-zero magnetization leading to ultrafast dynamics and robust order. To understand and control this order, nanoscale mapping of local domain structures is necessary. One of the main routes to …

[Phys. Rev. Lett. 137, 126702] Published Mon Sep 14, 2026

Excitonic effects dominate absorption and loss spectra in many materials. However, they are hard to access computationally, because of the cost of first-principles calculations and because of the scarce reliability of simple approximations. We overcome both limitations by combining a part of the ele…

[Phys. Rev. Lett. 137, 126901] Published Mon Sep 14, 2026

Optical second harmonic generation detects ferroic octupolar order in altermagnetic CoF${}_2$, establishing nonlinear interactions as signatures of altermagnetism in experiments.

[Phys. Rev. Lett. 137, 126902] Published Mon Sep 14, 2026

We investigate the effects of disorder on a system that in the clean limit is a pair density wave (PDW) superconductor. The charge order of the clean PDW is inevitably lost (via Imry-Ma), but the fate of the superconducting order is less clear. Here, we consider a strongly inhomogeneous limit in whi…

[Phys. Rev. Lett. 137, 116003] Published Fri Sep 11, 2026

We investigate lattice dynamics in ${\text{LaCoO}}_3$ using inelastic neutron and x-ray scattering over $\mathrm{T}=2-650\mathrm{K}$, spanning the spin-state crossover at ${\mathrm{T}}_1\approx 100\mathrm{K}$ and the insulator-metal transition at ${\mathrm{T}}_2\approx 550\mathrm{K}$. Comparison with quasiharmonic ab initio lattice-dynamical calculations helps reveal anomalous soften…

[Phys. Rev. Lett. 137, 116101] Published Fri Sep 11, 2026

An ultrafast x-ray diffraction measurement establishes a unified model for $B1-B2$ transition in KCl which can be generalized to other materials.

[Phys. Rev. Lett. 137, 116102] Published Fri Sep 11, 2026

Geometric frustration drives exotic quantum phases and transitions in condensed matter. One-dimensional frustrated magnets with inherent controllability are particularly promising for studying fundamental quantum physics, yet experimentally tunable systems remain scarce. Here, using first-principles…

[Phys. Rev. Lett. 137, 116402] Published Fri Sep 11, 2026

A simple conductance asymmetry metric helps disentangle coexisting spin, vibrational, and orbital excitations within a single cobaltocene molecule, unlocking new pathways for single-molecule quantum computing.

[Phys. Rev. Lett. 137, 116403] Published Fri Sep 11, 2026

Layered Ising metamagnets are antiferromagnetic (AF) materials consisting of monolayer Ising ferromagnets coupled to each other via interlayer AF interactions. They exhibit rich magnetic phase diagrams, featuring tricritical and critical end points, due to the competing magnetic interactions and the…

[Phys. Rev. Lett. 137, 116708] Published Fri Sep 11, 2026

A coplanar superconducting resonator makes possible the direct observation of the real-time entry of individual Abrikosov vortices.

[Phys. Rev. Lett. 137, 116001] Published Thu Sep 10, 2026

Crystal stacking offers a powerful yet underexplored route to engineer symmetry in layered superconductors. Here we report superconductivity in rhombohedral-stacked ${\mathrm{NbSe}}_2$ ($3R\text{−}{\mathrm{NbSe}}_2$), a noncentrosymmetric polytype in which global inversion symmetry is removed by stacking alone. Using comprehensive st…

[Phys. Rev. Lett. 137, 116002] Published Thu Sep 10, 2026

Reduced oxide surfaces often undergo complex reconstructions in which atomic rearrangements and reduction-induced electronic redistribution are strongly coupled, obscuring the electronic principles that govern their stability. Here, we address this problem on the prototypical rutile ${\mathrm{TiO}}_2(110)$ surfac…

[Phys. Rev. Lett. 137, 116201] Published Thu Sep 10, 2026

A nanomechanical resonator provides a simple way to directly measure the torque generated by electron vortices.

[Phys. Rev. Lett. 137, 116302] Published Thu Sep 10, 2026

Ballistic transport is traditionally regarded as a limiting regime for scattering-free energy transfer. Here, we predict a superballistic radiative heat transport regime that surpasses this limit in dilute chains of plasmonic nanoparticles confined within cavities. This anomalous regime exhibits sup…

[Phys. Rev. Lett. 137, 116303] Published Thu Sep 10, 2026

Research on altermagnetism has thus far primarily focused on spin-polarized bulk electronic states in magnetic materials. In this work, we advance the field by introducing the concept of surface altermagnetism (SAM), wherein altermagnetic spin polarization emerges at the surfaces of collinear antife…

[Phys. Rev. Lett. 137, 116705] Published Thu Sep 10, 2026

We demonstrate strong coupling between propagating spin-wave modes and microwave photons in superconducting resonator-magnetic thin film hybrid circuits. By fabricating the resonator directly on yttrium iron garnet thin films grown on rare-earth-free ${\mathrm{Y}}_3{\mathrm{Sc}}_2{\mathrm{Ga}}_3{\mathrm{O}}_{12}$ substrates, we achieve strong couplin…

[Phys. Rev. Lett. 137, 116706] Published Thu Sep 10, 2026

We propose a general expression for the domain-wall width in generic multisublattice Heisenberg magnets with collinear order and uniaxial anisotropy, applicable to ferro-, antiferro-, and ferrimagnetic orders. The result follows from an exact connection between the domain-wall profile and the long-w…

[Phys. Rev. Lett. 137, 116707] Published Thu Sep 10, 2026

A crystal with special geometric properties can be optically driven to produce an output beam with any desired polarization.

[Phys. Rev. Lett. 137, 116905] Published Thu Sep 10, 2026

Angle-Resolved Photoemission Spectroscopy measurements on twisted bilayer and double-bilayer MoTe₂, combined with theory, reveal remote electronic bands that follow twist-induced lattice relaxation, establishing a direct link between atomic reconstruction and electronic structure in moiré semiconductors.

[Phys. Rev. Lett. 137, 116401] Published Wed Sep 09, 2026

A universal scaling exponent $\kappa \approx 0.42$ corresponds to a dynamic exponent $z=1$ in the integer quantum Hall regime in a bilayer GaAs quantum well device.

[Phys. Rev. Lett. 137, 116501] Published Wed Sep 09, 2026

The behavior of spin quantum in $\mathbf{k}$-space is key to identifying altermagnets (AMs) as the third kind of fundamental collinear magnetism. By contrast, noncollinear magnets—though abundant in nature—lack well-defined spin quantum numbers, and the resulting spin textures are often highly complex, which l…

[Phys. Rev. Lett. 137, 116704] Published Wed Sep 09, 2026

Physical entropy-driven true random number generators are essential for emerging probabilistic computing paradigms, but conventional implementations based on magnetic tunneling junctions have reached their performance plateaus limited by inherent tradeoffs and weak tunability. Here, autferroics, a s…

[Phys. Rev. Lett. 137, 116801] Published Wed Sep 09, 2026

A long-standing challenge in electromagnetic dissipative systems is that dissipation and phase evolution are fundamentally entangled through the underlying admittance dynamics, leading to oscillatory and path-dependent response trajectories under tuning. In this Letter, we identify an admittance-sca…

[Phys. Rev. Lett. 137, 116903] Published Wed Sep 09, 2026

The circular photogalvanic effect in topological heterostructures offers a controllable route to enhanced, field-free terahertz emission, distinct from conventional spin-to-charge conversion.

[Phys. Rev. Lett. 137, 116904] Published Wed Sep 09, 2026

Negative refraction provides a route to steer and focus wave energy flow, but it remains difficult to realize for coherent terahertz phonons. The difficulty stems from conventional dispersion-based mechanisms, which require strongly anisotropic or negative-curvature dispersions, while the long-wavel…

[Phys. Rev. Lett. 137, 116301] Published Tue Sep 08, 2026

We have studied the magnetic properties of clinoatacamite ${\mathrm{Cu}}_2\mathrm{Cl}{(\mathrm{OH})}_3$, the parent compound of the quantum spin liquid candidate herbertsmithite and a long-standing puzzle among frustrated quantum magnets. As we reveal using density-functional theory, clinoatacamite belongs to the class of distorted k…

[Phys. Rev. Lett. 137, 116701] Published Tue Sep 08, 2026

We investigate the spin-$1/2$ $J_1–J_2$ triangular-lattice Heisenberg antiferromagnet in a magnetic field by combining large-scale density matrix renormalization group (DMRG) simulations with self-consistent spin-wave theory. The resulting field-coupling phase diagram reveals that quantum fluctuations sta…

[Phys. Rev. Lett. 137, 116702] Published Tue Sep 08, 2026

We show that the Kasteleyn transition, the abrupt proliferation of infinite strings of defects in classical dimer and related models, can also be relevant for frustrated 2D quantum magnets. This is explicitly demonstrated in a phase of the spin-$1/2$ Heisenberg diamond-decorated honeycomb lattice wher…

[Phys. Rev. Lett. 137, 116703] Published Tue Sep 08, 2026

Resonant coupling of a vibration to a cavity mode has been reported to dramatically modify spontaneous Raman scattering, but subsequent studies have produced conflicting results. In this Letter, we develop a microscopic quantum framework that captures the spatial structure of polaritonic modes. In a…

[Phys. Rev. Lett. 137, 116901] Published Tue Sep 08, 2026

We consider the consequence of having nonreciprocal photon transfer between two surfaces with temperature gradient. We demonstrate that in a system consisting of graphene and a magneto-optical substrate separated by a gap, a transverse electric field is generated in graphene perpendicular to magneti…

[Phys. Rev. Lett. 137, 116902] Published Tue Sep 08, 2026

We experimentally validate a new description of brittle tensile fracture that extends linear elastic fracture mechanics (LEFM) to account for the 2D geometry of propagating cracks in plates of finite thickness, $W$. We show that cracks nucleate below the Griffith length at a critical stress threshold.…

[Phys. Rev. Lett. 137, 106102] Published Fri Sep 04, 2026

The electronic properties of materials exhibiting giant thermopower with a thermopower that exceeds 2000 μV/K, such as EuCd${}_2$P${}_2$, are strongly temperature dependent.

[Phys. Rev. Lett. 137, 106302] Published Fri Sep 04, 2026

CePdAl is a heavy-fermion compound with a quasi-kagome structure, where geometrical frustration competes with the Kondo effect. Using a high-sensitivity magnetometer, we observe clear first-order metamagnetic transitions without magnetization plateaus in CePdAl at 80 mK, indicating a lifting of frus…

[Phys. Rev. Lett. 137, 106501] Published Fri Sep 04, 2026

We show how crystalline inversion symmetry can be dynamically broken by optical phonons with generic, hardening Kerr-like nonlinearities. The symmetry-broken state is reached through a parametric instability that can be accessed by driving close to half the phonon frequency. The system then settles …

[Phys. Rev. Lett. 137, 106903] Published Fri Sep 04, 2026

Strain-gradient engineering provides a doping-free route to modulate broadband optical emission in microfabricated diamond.

[Phys. Rev. Lett. 137, 106201] Published Thu Sep 03, 2026

A direct spectroscopic probe of the 4$f$ states across a pressure-induced phase transition in EuO reveals the absence of spectral changes, confirming the stability of the Eu valence in agreement with the DFT calculations.

[Phys. Rev. Lett. 137, 106401] Published Thu Sep 03, 2026

We show theoretically that weak quantum fluctuations induced by a nonsymmetric electromagnetic environment may lead to a quantized transconductance of a multiterminal quantum contact rather than to a blockade of transport in the contact. The result suggests the possibility to realize quantum Hall ph…

[Phys. Rev. Lett. 137, 106301] Published Wed Sep 02, 2026

Light-induced sliding ferroelectricity in two-dimensional van der Waals materials enables polarization control via relative layer motion. However, polarization switching occurs on the timescale of shear modes (tens of picoseconds) and requires very large fluences, potentially damaging the samples. H…

[Phys. Rev. Lett. 137, 106402] Published Wed Sep 02, 2026

Motivated by recent progress in moiré superlattices and spin-$1/2$ triangular-lattice antiferromagnets, we study how orbital magnetic flux and Zeeman coupling compete or cooperate in generating internal U(1) gauge flux in a triangular spin liquid. We show that orbital flux favors a chiral spin liquid …

[Phys. Rev. Lett. 137, 106502] Published Wed Sep 02, 2026

Tuning the electronic structure of the excitonic insulator candidate Ta${}_2$NiSe${}_5$ via sulfur substitution reveals that its highly directional phonon transport anomaly is directly driven by electronic fluctuations, suggesting that electronic interactions and lattice effects cooperatively contribute to its phase transition.

[Phys. Rev. Lett. 137, 106503] Published Wed Sep 02, 2026

Exact diagonalization provides strong numerical evidence that the Higgs transition between a Kalmeyer-Laughlin chiral spin liquid and a trivially gapped phase is continuous and governed by a conformal field theory.

[Phys. Rev. Lett. 137, 106504] Published Wed Sep 02, 2026

We study ultrafast magneto-photocurrents in a three-dimensional topological insulator. For this purpose, we excite ${({\text{In}}_r{\text{Bi}}_{1-r})}_2{\text{Se}}_3$ thin films with a femtosecond laser pulse in the presence of an external magnetic field ${\mathit{B}}_{\mathrm{ext}}$ up to $0.3\mathrm{T}$ parallel to the film plane. The resulting in-plane photocurrent …

[Phys. Rev. Lett. 137, 106601] Published Wed Sep 02, 2026

Hidden spin polarization (HSP), in which spin-polarized states exist locally while the total spin polarization is hidden in momentum space, has been extensively studied in nonmagnetic and collinear magnetic systems but remains largely unexplored in noncollinear magnets. Here we establish a unified s…

[Phys. Rev. Lett. 137, 106704] Published Wed Sep 02, 2026

Matching the cavity resonance lifetime to the driving laser pulse yields significantly greater near-field enhancement in ultrafast nanophotonics than maximizing the cavity quality factor alone.

[Phys. Rev. Lett. 137, 106902] Published Wed Sep 02, 2026

Dislocation motion, as a fundamental phenomenon modulating the microstructures of solid crystals, substantially affects material properties. Normally, dislocation motion is activated due to the presence of mechanical factors. But for nonmetals, nonmechanical factors like electronic stimulus have inc…

[Phys. Rev. Lett. 137, 106101] Published Tue Sep 01, 2026

Within the self-consistent Hartree-Fock approximation, the orbital magnetization for interacting electrons takes a form similar to the noninteracting case, while the orbital magnetic susceptibility acquires an additional interaction-dependent term.

[Phys. Rev. Lett. 137, 106703] Published Tue Sep 01, 2026

Magnons with momentum-dependent chirality are a key signature of altermagnets. We identify bicircular light as a smoking-gun optical probe for chiral altermagnetic magnons, selectively targeting their quantum geometry induced by an alternation of magnonic chirality. We show that in $d$-wave altermagne…

[Phys. Rev. Lett. 137, 106901] Published Tue Sep 01, 2026

Counter examples to the commonly accepted proof that collinear magnets always have an inversion symmetric band structure along with a symmetry analysis when the proof breaks down challenges the existing classification of collinear magnets.

[Phys. Rev. Lett. 137, 106701] Published Mon Aug 31, 2026

A study of the counter-Nagaoka problem of a single hole in an infinite-$U$ Hubbard model on the kagome lattice reveals a new type of polaron, a resonating-valence-bond polaron that morphs into semiclassical order as polarization is reduced.

[Phys. Rev. Lett. 137, 106702] Published Mon Aug 31, 2026

The ground state of CsV${}_3$Sb${}_5$ is not a single superconducting state but two degenerate states.

[Phys. Rev. Lett. 137, 096003] Published Fri Aug 28, 2026

Bound states in the continuum (BICs) are nonradiative modes embedded in the radiation continuum, offering powerful opportunities for wave manipulation in open systems. Although BICs themselves cannot be assigned a well-defined polarization state in the far field, the surrounding polarization field e…

[Phys. Rev. Lett. 137, 096202] Published Fri Aug 28, 2026

Using an extension of the fermionic functional renormalization group for systems where strong correlations give rise to projected Hilbert spaces, we calculate the phase diagram and the electronic spectral function of the Hubbard model at infinite on-site repulsion. For a square lattice with nearest-…

[Phys. Rev. Lett. 137, 096506] Published Fri Aug 28, 2026

Tunneling spectroscopy cannot be used as an unambiguous detection tool for Majorana zero modes (MZMs) in conventional partial-shell nanowires. The presence of smooth confinement at the end of the hybrid wire (among other sources of disorder) can create exponentially pinned zero-energy states, called…

[Phys. Rev. Lett. 137, 096606] Published Fri Aug 28, 2026

The concept of morphotropic phase boundary has recently been employed to enhance the piezoelectric response in polymeric ferroelectrics, substantially improving the $d_{33}$ coefficient through engineered phase boundaries between $\beta$ and $3/1$-helical phases in polyvinylidene fluoride-based systems. However,…

[Phys. Rev. Lett. 137, 096801] Published Fri Aug 28, 2026

Circular dichroism (CD) and other chiroptical responses are key probes of both chirality and momentum-space geometry in solids, but first-principles calculations are still challenging in periodic systems with strong exciton effects. Here, we develop a gauge-invariant first-principles framework for C…

[Phys. Rev. Lett. 137, 096901] Published Fri Aug 28, 2026

We study the phase diagram of a one-dimensional spin quantum breakdown model, which has an exponential $U(1)$ symmetry with charge unit decaying as $2^{-j}$ with site position $j$. By exact diagonalization and density matrix renormalization group, we show that the model with spin $S\ge 2$ exhibits an exponential $\dots$

[Phys. Rev. Lett. 137, 096002] Published Thu Aug 27, 2026

In two-dimensional (2D) van der Waals (vdW) structures, the twist angle between adjacent layers has emerged as a pivotal parameter for engineering electronic band structures. This is vividly exemplified by the discovery of an extensive array of correlated and topological phases in 2D moiré systems. …

[Phys. Rev. Lett. 137, 096201] Published Thu Aug 27, 2026

The non-Hermitian skin effect dramatically alters both the spectrum and real-time dynamics of non-Hermitian systems. We investigate the edge dynamics of waves initialized in non-Hermitian lattices, where the non-Hermitian skin effect tends to localize states, leading to behavior beyond the Bloch pic…

[Phys. Rev. Lett. 137, 096403] Published Thu Aug 27, 2026

A singular density correlation that is generic to all two-dimensional Fermi liquids offers an independent method for measuring the Landau parameters that characterize the Fermi-liquid phase using quantum-gas microscopy.

[Phys. Rev. Lett. 137, 096504] Published Thu Aug 27, 2026

We show that collective excitations and optical responses of moiré fractional Chern insulators (FCIs) drastically differ from those of standard fractional quantum Hall (FQH) states in a Landau level. By constructing a variational wave function that incorporates the moiré lattice effect, we capture t…

[Phys. Rev. Lett. 137, 096505] Published Thu Aug 27, 2026

Driven dynamics at topologically nontrivial quantum critical points leads to anomalous boundary and edge scaling beyond the Kibble–Zurek prediction in several quantum spin chain models.

[Phys. Rev. Lett. 137, 096605] Published Thu Aug 27, 2026

Strong quantum fluctuations dominate the spin-$1/2$ triangular lattice Heisenberg antiferromagnet, but their survival at spin-1 remains an open question. We address it in ${\mathrm{K}}_2\mathrm{Ni}({\mathrm{SeO}}_3{)}_2$, a nearly ideal spin-1 realization, using inelastic neutron scattering. Below the ordering temperature $T_{\mathrm{N}}$, coherent one…

[Phys. Rev. Lett. 137, 096701] Published Thu Aug 27, 2026

We demonstrate a magnetic quantum critical point embedded within the superconducting state of Zn-doped ${\mathrm{CeCoIn}}_5$, revealed by a pronounced peak in the magnetic penetration depth at zero temperature $\lambda (0)$. Using scanning superconducting quantum interference device microscopy, we determine the local supe…

[Phys. Rev. Lett. 137, 096001] Published Wed Aug 26, 2026

The first time-resolved observation of collective magnetic excitations in a photoexcited cuprate across energy, momentum, and time proves that light-induced paramagnon dynamics cannot be explained by simple thermalization.

[Phys. Rev. Lett. 137, 096502] Published Wed Aug 26, 2026

We investigate the electronic structure at the surface of the correlated oxide ${\mathrm{Ca}}_3{\mathrm{Ru}}_2{\mathrm{O}}_7$, a low-symmetry ruthenate oxide which hosts an unconventional polar-metal phase. From a combination of angle-resolved photoemission spectroscopy and scanning tunneling spectroscopy measurements, we demonstrate th…

[Phys. Rev. Lett. 137, 096503] Published Wed Aug 26, 2026

Realization of a three-dimensional (3D) analog of graphene has been a central challenge in topological materials science. Graphene is stabilized by covalent bonding, unlike conventional spin-orbit-type 3D Dirac semimetals (DSMs). In this study, we demonstrate the material realization of covalent-typ…

[Phys. Rev. Lett. 137, 096603] Published Wed Aug 26, 2026

Topological superconductivity and Majorana zero modes emerge from two feasible platforms, quasi-1D nanowires and vortex-line heterostructures, when crystal anisotropy and quantum confinement act as tuning parameters.

[Phys. Rev. Lett. 137, 096604] Published Wed Aug 26, 2026

The calculation of thermal conductivity in insulating solids at temperatures below the Debye temperature is problematic, due to the breakdown of classical and semiclassical approaches. In this Letter, we present a fully nonperturbative quantum methodology to compute thermal conductivity based on pat…

[Phys. Rev. Lett. 137, 096302] Published Tue Aug 25, 2026

Previous studies of incommensurate systems concluded that their critical scaling is sensitively dependent on the irrational, $\alpha$, which determines the incommensuration. Contrary to this belief, in the canonical Harper-Hofstadter model, we show there is universal $\alpha$-independent scaling for almost all $\alpha$.…

[Phys. Rev. Lett. 137, 096303] Published Tue Aug 25, 2026

In crystalline solids, disorder breaks translational symmetry and obscures $\mathit{k}$-resolved Bloch states, limiting an accurate description of wave-function-based observables. In this Letter, we present a method that unfolds not only the band structures but also the corresponding Bloch states in disordered…

[Phys. Rev. Lett. 137, 096402] Published Tue Aug 25, 2026

It is widely believed that in the adiabatic limit the Fermi liquid state of an electron-phonon system, described by Migdal-Eliashberg theory, remains stable until the dressed phonon softens. Our variational and analytic analysis of the prototypical Holstein model shows that, in a wide range of filli…

[Phys. Rev. Lett. 137, 096501] Published Tue Aug 25, 2026

A single Landau level (LL) dressed with periodic electrostatic potentials can realize a plethora of interacting topological phases where the Hall conductivity generally does not equal to the LL filling factor. Their physics can be captured by a new family of flat topological bands: decorated Landau …

[Phys. Rev. Lett. 137, 096601] Published Tue Aug 25, 2026

We demonstrate that stacking topologically trivial layers, under enforced symmetry restrictions, yields emergent topological phases with protected boundary states. Remarkably, the number of layers itself acts as a topological switch, enabling the system to host topological bound states in the contin…

[Phys. Rev. Lett. 137, 096602] Published Tue Aug 25, 2026

We investigate the mechanisms involved in the thermomigration of interstitial hydrogen in metals. Using irreversible thermodynamics, we develop a comprehensive mechanistic model to capture the controlling effects. Crucially, through validation against published experimental data, our results demonst…

[Phys. Rev. Lett. 137, 096301] Published Mon Aug 24, 2026

A theoretical study reveals that trions can be identified in time-resolved ARPES measurements with distinct signatures for positive and negative trions.

[Phys. Rev. Lett. 137, 096401] Published Mon Aug 24, 2026

Significant research advances have led to a consensus that the Fermi-Hubbard model and its extended variants are archetypical frameworks for elucidating the intertwined relationship between stripe orders and superconductivity in hole-doped high-$T_c$ materials. Notably, the Hubbard quantum simulator ha…

[Phys. Rev. Lett. 137, 086702] Published Fri Aug 21, 2026

Exotic noncollinear room-temperature ferroelectricity has now been experimentally realized in 2D WO${}_2$Cl${}_2$, establishing a polar counterpart to noncollinear spin textures.

[Phys. Rev. Lett. 137, 086801] Published Fri Aug 21, 2026

Intercalation-driven self-doping is a general mechanism for engineering high-temperature superconductivity and emergent quantum states in Ruddlesden–Popper phase correlated oxides.

[Phys. Rev. Lett. 137, 086004] Published Thu Aug 20, 2026

The toric code, when deformed in a way that preserves the self-duality ${\mathbb{Z}}_2$ symmetry exchanging the electric and magnetic excitations, admits a transition to a topologically trivial state that spontaneously breaks the ${\mathbb{Z}}_2$ symmetry. Numerically, this transition was found to be continuous, which makes it…

[Phys. Rev. Lett. 137, 086505] Published Thu Aug 20, 2026

Bright entangled photon sources with on-demand quantum state control are essential for advancing quantum science and technologies. However, simultaneously achieving high brightness and state tunability remains challenging, as this necessitates a dual-phase control mechanism that facilitates both lon…

[Phys. Rev. Lett. 137, 086901] Published Thu Aug 20, 2026

Researchers have made the first definitive measurements of an elusive superconducting state.

[Phys. Rev. Lett. 137, 086003] Published Wed Aug 19, 2026

Chiral superconductivity is a novel superconducting phase characterized by order parameters that break time-reversal symmetry, endowing the state with a definite handedness. Unlike conventional superconductors, the Cooper pairs in a chiral superconductor carry nonzero orbital angular momentum. Throu…

[Phys. Rev. Lett. 137, 086002] Published Tue Aug 18, 2026

Spin density waves (SDWs) represent a fundamental paradigm of spatially modulated order in condensed matter systems, yet their electrical and mechanical analogs—polarization and strain density waves (PDWs and StDWs)—have remained elusive as equilibrium phases. Here, we introduce a general, symmetry-…

[Phys. Rev. Lett. 137, 086101] Published Tue Aug 18, 2026

We investigate the microscopic properties of the kagome compound ${\mathrm{Cs}}_2{\mathrm{Cu}}_3{\mathrm{SnF}}_{12}$ using ${}^{63,65}\mathrm{Cu}$ nuclear quadrupolar resonance. Analysis of the local hyperfine fields below the Néel temperature $T_{\mathrm{N}}=20\mathrm{K}$ indicates a spin structure consistent with $P{2}_1/n$ symmetry of negative vector chirality. Measurements of…

[Phys. Rev. Lett. 137, 086501] Published Tue Aug 18, 2026

Density matrix renormalization group calculations reveal spin-stripe ordering at large Hund’s coupling, demonstrating that Hund’s coupling and inter-layer coupling are key parameters in magnetic order and pairing.

[Phys. Rev. Lett. 137, 086502] Published Tue Aug 18, 2026