JPS Hot Topics

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

Insights into the Overlooked Electric Ferro-Axial Ordering

We theoretically demonstrate spin related conductivity under electric ferro-axial ordering. We show an intrinsic generation of a spin current parallel to an applied electric field in metals and insulators.

Understanding the Obscure Antiferromagnetism in α-Mn by Nuclear Magnetic Resonance

Although Mn is an elementary metal, the antiferromagnetic state of α-Mn is still obscure. Our NMR study on high-quality α-Mn provides new insights into the symmetry of its antiferromagnetism.

Magnetic properties in condensed matter

Theoretical Assessment of F-wave Bottom Mesons and Their Properties

We use heavy quark effective theory to study F-wave bottom mesons. Using theory and experimental data, we calculate their masses and analyze their decay widths to estimate the upper bound to the associated couplings.

Theoretical Particle Physics

Towards a Better Understanding of the Short-range Repulsive Nuclear Force

In a new study, researchers provide an experimental estimate of the short-range repulsive nuclear force strength based on a high-statistics measurement of the differential cross-section for Σ⁺p scattering.

Nuclear physics

Observing the de Haas–van Alphen Effect to Unveil the Electronic Structure of UTe₂ Superconductor

The topology of Fermi surfaces with heavy effective masses in strongly correlated topological superconductor UTe₂ was investigated using quantum oscillation measurements and theoretical calculations.

Electron states in condensed matter

Superconductivity

Strange Metal Behavior Potentially Associated to Hidden Electronic Nematicity

Iron-based superconductor, Ba_1-xRb_xFe₂As₂, exhibits “strange metal” behavior—linear dependence of resistivity on temperature. It seems that hidden electronic nematic fluctuations play a greater role than the well-known antiferromagnetic fluctuations.

Superconductivity

Electronic transport in condensed matter

Thermoelectric Response in Strongly Disordered Systems

Based on the Kubo–Luttinger linear response theory, we discovered that the low-T Seebeck coefficient for Mott variable-range hopping in a d-dimensional system varies as S ∝ T^d/(d+1), which is different from the conventional S ∝ T^{(d−1)/(d+1)}. In addition, the experimental data for S of CuCrTiS₄ at low T are in excellent agreement with our prediction S ∝ T^3/4 (d = 3).

Electronic transport in condensed matter

Representations of KBc Algebra for Generating String Field Theory Solutions

We propose a general method for generating solutions in string field theory from a solution constructed using KBc algebra, and reproduce known solutions constructed earlier using different methods.

Theoretical Particle Physics