Year2024

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A New Method for Finding Bound States in the Continuum
2024101
This study presents a general theory for constructing potentials supporting bound states in the continuum, offering a method for identifying such states in real quantum systems.
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Nuclear physics

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Understanding NonInvertible Symmetries in Higher Dimensions Using Topological Defects
2024927
By constructing KramersWannierWegner duality and Z_{2} duality defects and deriving their crossing relations, this study presents the first examples of codimension one noninvertible symmetries in fourdimensional quantum field theories.
Theoretical Particle Physics

NEW
A Neural Thermometer for Predicting Phase Transitions of Unknown Systems
2024911
A novel convolutional neural network predicts phase transition temperatures from spin configurations without prior information about order parameters, paving the way for the discovery of new materials in condensed matter physics.
Measurement, instrumentation, and techniques
Statistical physics and thermodynamics

PressureTuned Classical–Quantum Crossover in Magnetic FieldInduced Quantum Phase Transitions of a TriangularLattice Antiferromagnet
202495
The correspondence principle states that as quantum numbers approach infinity, the nature of a system described by quantum mechanics should match that described by classical mechanics. Quantum phenomena, such as quantum superposition and quantum correlation, generally become unobservable when a system approaches this regime. Conversely, as quantum numbers decrease, classical descriptions give way to observable quantum effects. The external approach to classical–quantum crossover has attracted research interest. This study aims to demonstrate a method for achieving such control in materials.
Magnetic properties in condensed matter
Electron states in condensed matter
Crossdisciplinary physics and related areas of science and technology

Discovery of LightInduced Mirror Symmetry Breaking
202492
The authors discovered the lightinduced mirror symmetry breaking, paving the way for controlling mirror symmetries via light and for realizing various phenomena utilizing the mirror symmetry breaking.
Dielectric, optical, and other properties in condensed matter
Electronic transport in condensed matter

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The Mysterious Superconductivity of Sr_{2}RuO_{4}
2024822
Researchers review the recent advancements made towards solving the mysteries of the unconventional superconductivity of Sr_{2}RuO_{4}, analyzing recent experiments and theoretical models and proposing approaches to resolve current challenges.
Superconductivity

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General QuasiJoint Probabilities on FiniteState Quantum Systems
2024815
This study investigates the properties of general quasijoint probability distributions in finitestate quantum systems, revealing the KirkwoodDirac distribution as among the most favorable. This highlights the importance of complex distributions in understanding quantum probability.
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling

Discovery of Unconventional PressureInduced Superconductivity in CrAs
2024813
A new study has discovered pressureinduced superconductivity in the helimagnet CrAs, originating in the vicinity of the helimagnetic ordering, representing the first example of superconductivity in Crbased magnetic systems.
Superconductivity
Electronic transport in condensed matter

Unification of Spin Helicity in the Magnetic Skyrmion Lattice of EuNiGe_{3}
202487
In the magnetic skyrmion lattice of noncentrosymmetric EuNiGe_{3}, the original magnetic helicity, determined by the antisymmetric exchange interaction, is reversed, resulting in a unified helicity.
Magnetic properties in condensed matter

Having a Good Friend around Makes Life Better
2024729
It is true that having a good friend around makes life better, and this idea is also true in the quantum world.
Crossdisciplinary physics and related areas of science and technology

Antiferromagnetism Induces Dissipationless Transverse Conductivity
2024724
An investigation using highquality NbMnP crystals demonstrates that the anomalous Hall conductivity arising from antiferromagnetism is dissipationless, as expected from the intrinsic mechanism.
Electronic transport in condensed matter
Magnetic properties in condensed matter
Electronic structure and electrical properties of surfaces and nanostructures

d^{2} Trimer and d^{3} Tetramer in a Pyrochlore Lattice
2024711
Based on the charge disproportionation of V^{3+} and V^{2+}, the V^{3+}(d^{2}) trimers and V^{2+}(d^{3}) tetramers in the vanadium pyrochlore lattice of AlV_{2}O_{4} are described by the orbitallyinduced Peierls mechanism.
Dielectric, optical, and other properties in condensed matter
Electron states in condensed matter

Structural Rotation and Falsely Chiral Antiferromagnetism: A New Combination Generating Ferrotoroidic State
202474
The ferrotoroidic state, an exotic state of matter with broken space inversion and timereversal symmetries, was achieved by combining structural rotation and falsely chiral antiferromagnetism in PbMn_{2}Ni_{6}Te_{3}O_{18}.
Magnetic properties in condensed matter
Dielectric, optical, and other properties in condensed matter

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Understanding Electronic Ordering and Cross Correlations with Multipole Representation
2024612
This study reviews the recent advancements in research of multipole representations for understanding electronic orderings and crosscorrelations in materials and presents future research directions.
Magnetic properties in condensed matter

Evaluation of the Exchange Stiffness Constants of Itinerant Magnets from the FirstPrinciples Calculations
202465
Using firstprinciples calculations, we evaluated the exchange stiffness constants of ferromagnetic metals at finite temperatures. The constants can be used as parameters in the Landau–Lifshitz–Gilbert equation.
Electron states in condensed matter
Structure and mechanical and thermal properties in condensed matter

Microscopic Exploration of Electronic States in Nickelate Superconductors
2024531
The multilayered nickelates, La_{3}Ni_{2}O_{7} and La_{4}Ni_{3}O_{10} , were investigated using nuclear magnetic resonance (NMR) at ambient pressure. Metallic electronic states under the density wave order were observed microscopically for both compounds.
Magnetic properties in condensed matter
Superconductivity

SingleCrystal Growth of a Cuprate Superconductor with the Highest Critical Temperature
2024520
Millimetersized single crystals of a trilayer cuprate superconductor (Hg,Re)Ba_{2}Ca_{2}Cu_{3}O_{8+δ} that exhibits the highest superconducting transition temperature under ambient pressure, were grown reproducibly and safely.
Superconductivity

Solving a Stochastic Differential Equation is Solving a MeanField Quantum Spin System
2024516
The replica method maps matrixvalued geometric Brownian motion to a meanfield quantum spin system. This correspondence makes it possible to obtain an exact solution for matrixvalued geometric Brownian motion.
Statistical physics and thermodynamics
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Magnetic properties in condensed matter

Cooking in Salt for UltraClean Superconductor UTe_{2}
2024430
A new crystal growth technique, the molten salt flux liquid transport method, was developed to produce highquality single crystals of spintriplet superconductor UTe_{2}. This method is promising for exploring the exotic superconductivity of other materials.
Superconductivity

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Exploring Electronic States in BEDTTTF Organic Superconductors
2024424
This review, published in the Journal of the Physical Society of Japan, provides a comprehensive summary of the electronic states observed in BEDTTTF type organic superconductors, including metalinsulator transitions, Mottness transitions, nonFermi liquids, quantum spin liquids, and BoseEinstein condensation.
Superconductivity
Electronic transport in condensed matter
Magnetic properties in condensed matter

Conversion of Chiral Phonons into Magnons in Magnets
202441
A new phenomenon involving the conversion of chiral phonons into magnons is theoretically predicted. The effective magnetic field induced by chiral phonons causes a change in the spin magnetization of magnets.
Electronic transport in condensed matter

Which is Moving?—Pinning Down the Origin of Fluctuations in Muon Spin Relaxation—
2024328
The study demonstrated that we can distinguish between the diffusion motion of the muon itself and the motion of the surrounding ions in muon spin relaxation.
Structure and mechanical and thermal properties in condensed matter
Crossdisciplinary physics and related areas of science and technology

Variety of Mechanically Induced Spin Currents in Rashba Systems
2024322
Various types of spin currents, including unconventional types, are generated in Rashba spinorbit coupled systems by dynamic lattice distortions associated with, for example, surface acoustic waves.
Electronic transport in condensed matter
Magnetic properties in condensed matter
Structure and mechanical and thermal properties in condensed matter

What Determines the Sign of Spin Current? ~ Theoretical Study of Spin Seebeck Effect in Antiferromagnetic Insulators
2024318
We developed a microscopic theory for the spin Seebeck effect in antiferromagnets, that explains the sign reversal of the spin current at the spinflop transition point and describes the sorts of dominant carriers.
Electronic transport in condensed matter

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Quantum Mechanics of OneDimensional ThreeBody Contact Interactions
2024213
The quantum mechanical description of topologically nontrivial threebody contact interactions in one dimension is not well understood. This study explores the Hamiltonian description of these interactions using the pathintegral formalism.
Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling
Theoretical Particle Physics

Chiral Anomalies in Organic Dirac Semimetals
202425
A threedimensional massless Dirac fermion system exhibiting broken chiral symmetry was successfully realized in organic conductor α(BEDTTTF)_{2}I_{3} under high pressures. Our study detected the chiral anomalyinduced negative magnetoresistance and planar Hall effects and opened new avenues for further advancements in the field.
Electronic transport in condensed matter

Relation between MeanField Theory and Atomic Structures in Chalcogenide Glasses
202421
The authors conducted various of Xray and neutron scattering experiments on typical chalcogenide glasses and clarified the relationship between the atomic structure and simple rigidity percolation theory.
Structure and mechanical and thermal properties in condensed matter

Thermodynamic Property of a CMOS Device beyond Landauer Limit
2024123
Focusing on a CMOS NAND GATE operating in a subthreshold region, the thermodynamic cost of computation was analyzed in relation to input/output voltages surpassing the Landauer limit.
Statistical physics and thermodynamics
Electronic transport in condensed matter
Crossdisciplinary physics and related areas of science and technology

Investigating Unitarity Violation of Lee–Wick’s Complex Ghost with Quantum Field Theory
2024119
Theories with fourthorder derivatives like Lee–Wick’s quantum electrodynamics model or quadratic gravity result in complex ghosts above a definite energy threshold that violate unitarity.
Theoretical Particle Physics

Current Melt Frozen Electrons
2024115
The origin of the currentinduced insulatortometal transition of samarium monosulfide was explained by the 4f−5d hybridization observed using optical reflectivity and photoelectron spectroscopies.
Dielectric, optical, and other properties in condensed matter
Magnetic properties in condensed matter

Towards Uncovering the Hidden Order of URu_{2}Si_{2} Phase Transition
2024111
We propose a chiral charge as the hidden order parameter in URu_{2}Si_{2} and present experiments to detect it by focusing on breakings of mirror and inversion symmetries at the local uranium ion.
Magnetic properties in condensed matter
Electronic structure and electrical properties of surfaces and nanostructures