JPS Hot Topics

This research developed a strategy for fabricating ultrathin electrolyte layers of samarium-doped cerium oxide (SDC), which is known for its exceptional oxide-ion conductivity. The key innovation is the precise control of the structure of the material during the sputter deposition of the films. The SDC thin film with a thickness of 20 nm, fabricated on […]

Angle-resolved photoemission spectroscopy is a powerful experimental technique that can measure the energy-momentum relation of electron removal excitation from interacting electrons in a solid. This relation is often referred to as band dispersion, and it is split into spin-up and spin-down branches in ferromagnets and ferrimagnets with net magnetization. Such band splitting in a collinear […]

Consider the problem of understanding the behavior of a system of interest and predicting its future behavior. In many cases, we assume that the underlying mechanisms are complex or unknown, and difficult to deductively understand from first principles. In such situations, statistical learning provides a basic framework for addressing this problem by fitting a postulated […]

In solids, electrons carry both charge and spin. The arrangement of these spins in a material largely determines its magnetic properties, such as whether it is ferromagnetic, antiferromagnetic, or something more exotic. Because the full many-electron problem is extremely complex, physicists often use spin models that focus only on the spin degrees-of-freedom. A representative example […]

 The magnetic-field-induced transition in a spin S = 1/2 one-dimensional (1D) magnet with Ising anisotropy under a transverse field is a prototypical example of a quantum phase transition driven by quantum fluctuations near absolute zero. Because the Zeeman term associated with a transverse magnetic field applied perpendicular to the Ising axis does not commute with […]

The discovery rate of truly frustrated magnets has decreased. Conventional high-temperature synthesis often yields well-ordered antiferromagnets, and materials with nearly canceled interactions are scarce. Herein, we show that low-temperature chemistry can convert a modest, partially magnetic spinel into an antiferromagnet with a diamond network. The key step is a topochemical ion‑exchange, which preserves the Ti3O8 […]

Experiments with diamond anvil cells (DACs) that create extreme pressure conditions allow investigation of material behavior in environments like those deep inside the Earth and how new phases or superconductivity emerge. However, measuring pressure in a DAC can be complex. The pressure inside the tiny sample chamber can vary from one place to another, and […]

Understanding the electronic properties of materials, particularly those with strong electron correlations, is a central challenge in condensed matter physics and materials science. One key concept is the “quasiparticle band structure,” which describes how electrons behave in a solid and determines its physical properties. However, accurate calculation of these band structures is difficult for classical […]

With the increasing digitization on the global scale, researchers are now focusing on minimizing the energy consumed by electronic devices by searching for methods to manipulate material properties with minimal energy loss. The magnetoelectric (ME) effect in multiferroic materials allows magnetic properties to be controlled by an electric field instead of current, potentially enabling the […]

Molecular materials play an increasingly important role in safe and sustainable applications owing to their variety of physical properties and high degree of arrangement in material design. They exhibit a fascinating range of properties, including superconductivity, formation of Dirac electron systems, spin- and charge-density waves, photoinduced phase transitions, altermagnetism and so on. k-(BEDT-TTF)2Cu(NCS)2 is known […]