FieldsDielectric, optical, and other properties in condensed matter

d² Trimer and d³ Tetramer in a Pyrochlore Lattice

Based on the charge disproportionation of V³⁺ and V²⁺, the V³⁺(d²) trimers and V²⁺(d³) tetramers in the vanadium pyrochlore lattice of AlV₂O₄ are described by the orbitally-induced 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

The ferrotoroidic state, an exotic state of matter with broken space inversion and time-reversal symmetries, was achieved by combining structural rotation and falsely chiral antiferromagnetism in PbMn₂Ni₆Te₃O₁₈.

Magnetic properties in condensed matter

Dielectric, optical, and other properties in condensed matter

Current Melt Frozen Electrons

The origin of the current-induced insulator-to-metal 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

One-Way Optical Waveguide Realized by Edge Modes of Topological Photonic Crystals

A one-way optical waveguide was realized on the boundary between two types of photonic crystals with different topological properties, which were demonstrated by high-resolution infrared reflection measurements.

Electromagnetism, optics, acoustics, heat transfer, and classical and fluid mechanics

Dielectric, optical, and other properties in condensed matter

Dzyaloshinskii–Moriya Interactions in Magnetism, Electricity, and Electronics

A collection of papers in the Journal of the Physical Society of Japan advances our understanding of Dzyaloshinskii–Moriya interaction and paves the way for developing next generation computing and electronic systems.

Magnetic properties in condensed matter

Electron states in condensed matter

Dielectric, optical, and other properties in condensed matter

How Many Excitons Can Combine?

Quantum diffusion Monte Carlo simulation demonstrated the formation of polyexcitons in two-dimensional multi-valley semiconductor systems, where all exciton pairs were energetically bound by equal-strength “chemical bonds.”

Dielectric, optical, and other properties in condensed matter

Electronic structure and electrical properties of surfaces and nanostructures

Toward Accurate Diamond Quantum Sensing

A systematic investigation of the optical power dependence of the response of diamond quantum sensors provides valuable guidelines for accurate magnetic field measurements.

Dielectric, optical, and other properties in condensed matter

Geometry-Based Nonlinear and Nonequilibrium Phenomena in Solids

Researchers from The University of Tokyo have recently reviewed geometric aspects of nonlinear and nonequilibrium optical phenomena for advanced materials applications in novel solar panels, photodetectors, diodes, and quantum computing.

Electronic structure and electrical properties of surfaces and nanostructures

Dielectric, optical, and other properties in condensed matter

Electronic transport in condensed matter

Electron-Hole Asymmetry Observed in Photoinduced Phase Transition of Excitonic Insulators

During a photoinduced phase transition from an excitonic insulator to a semimetal, photoinduced energy shift of its hole band is delayed than that of its electron band indicating electron-hole asymmetry.

Dielectric, optical, and other properties in condensed matter

Electronic structure and electrical properties of surfaces and nanostructures

Towards a New Phase in Materials Science with Hyperordered Structures

A Special Topics edition of the Journal of the Physical Society of Japan features articles discussing recent advancements in hyperordered structures in materials, their applications, and the techniques for observing them.

Structure and mechanical and thermal properties in condensed matter

Cross-disciplinary physics and related areas of science and technology

Dielectric, optical, and other properties in condensed matter

Electron states in condensed matter

Atomic and molecular physics

Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling

High Magnetic Field as a Tool for Discovery in Condensed Matter Physics

The Journal of the Physical Society of Japan highlights in this special topic recent advances in modern physics that have been realized with the generation of pulsed high magnetic fields.

Magnetic properties in condensed matter

Dielectric, optical, and other properties in condensed matter

Electronic transport in condensed matter

Structure and mechanical and thermal properties in condensed matter

Electron states in condensed matter

Electronic structure and electrical properties of surfaces and nanostructures

Measurement, instrumentation, and techniques

Terahertz Radiation as a Tool for Exploring Material Properties

Researchers from Japan highlight, in a recent review, the range of material properties that can be and have been studied using the phenomenon of femtosecond laser-induced terahertz radiation emission.

Dielectric, optical, and other properties in condensed matter

Birefringence Imaging-Based Investigation of Stress-Induced Phase Transitions in SrTiO₃

The spatial distributions of ferroelectric and structural phase transitions in quantum paraelectric SrTiO₃ under uniaxial stress were microscopically observed using birefringence imaging techniques.

Dielectric, optical, and other properties in condensed matter

New Chiral Molecular Ferroelectrics

A new chiral ferroelectric material is discovered in a purely organic system, 1,1’-bi-2-naphthol・2 dimethyl sulfoxide (BINOL・2DMSO).

Dielectric, optical, and other properties in condensed matter

Understanding Relaxor Ferroelectrics with Simple Landau Theory

Third-order nonlinear dielectric susceptibility is measured in the paraelectric phase of Pb(Sc_1/2Ta_1/2)O₃. The linear and nonlinear dielectric susceptibility results can be consistently explained based on the Landau-type free-energy density.

Dielectric, optical, and other properties in condensed matter

Structure and mechanical and thermal properties in condensed matter

Cross-disciplinary physics and related areas of science and technology

New Systematic Analysis Method of Identifying Microscopic Essential Couplings

We propose a systematic method of identifying essential model parameters for nonlinear response tensors. The analysis results reveal fundamental couplings in nontrivial responses and promote further development of multiferroic responses.

Electronic transport in condensed matter

Dielectric, optical, and other properties in condensed matter

Cross-disciplinary physics and related areas of science and technology

Shedding Light on Nonreciprocal Directional Dichroism at High Magnetic Fields in a Multiferroic Material

Large optical nonreciprocal directional dichroism, coupled with an antiferromagnetic order parameter, is observed in a high magnetic field via magneto-optical spectroscopy combined with a pulse magnet technique.

Dielectric, optical, and other properties in condensed matter

Magnetic properties in condensed matter

A Two-step Creation of Phonon Entanglement with Quantized Light

Dynamics of photoinduced quantum entanglement generation between phonons is theoretically revealed. The results contribute to the study of fundamental theoretical problems within quantum dynamics of photoinduced phase transitions and quantum information science.

Dielectric, optical, and other properties in condensed matter

Electromagnetism, optics, acoustics, heat transfer, and classical and fluid mechanics

Mathematical methods, classical and quantum physics, relativity, gravitation, numerical simulation, computational modeling

The Mysteries of Charge Order and Charge Fluctuations in Cuprate Superconductors

This Special Topics issue condenses the latest research on the enigmatic characteristics of high-temperature superconductivity in cuprates through the observation and elucidation of charge order, charge fluctuations, and other phenomena.

Superconductivity

Dielectric, optical, and other properties in condensed matter

Structure and mechanical and thermal properties in condensed matter

Magnetic properties in condensed matter

Analyzing Photoinduced Phase Transitions in an Organic Salt Using Floquet Theory

Rich nonequilibrium phase diagrams, including photoinduced topological insulator phases, were theoretically predicted for an organic salt α-(BEDT-TTF)₂I₃ when irradiated by elliptically polarized light.

Electronic structure and electrical properties of surfaces and nanostructures

Dielectric, optical, and other properties in condensed matter

Electric Quadrupole Orders in f-Electron Systems on the fcc Lattice

We theoretically showed that electric quadrupoles in some heavy fermion materials exhibit a very rich phase diagram including unique partially-ordered phases stabilized by an interaction specific to these systems.

Magnetic properties in condensed matter

Dielectric, optical, and other properties in condensed matter

Statistical physics and thermodynamics

Electronic Nematic Ordering Driven by Atomic-scale Multipoles

Theoretical investigations have unearthed a plethora of electronic nematic orderings driven by the spatial distribution of atomic-scale electric quadrupoles.

Magnetic properties in condensed matter

Dielectric, optical, and other properties in condensed matter

Statistical physics and thermodynamics

On and Off: The Physics Behind Photoswitchable Magnetic Octacyanometalates

We make a major breakthrough in understanding the photoswitchable magnetism in square-antiprismatic octacyanometalates. We reveal that the ``bidirectional” magnetism is accompanied by ``monodirectional electronics” to find a possibility of fabricating multifunctional magnetic devices.

Dielectric, optical, and other properties in condensed matter

Magnetic properties in condensed matter