JPS Hot Topics

We developed a new topological data analysis method to objectively identify the cardiac vortex structures. The method provides robust quantitative metrics for advancing cardiovascular diagnostics.

Tsunami-like solitons propagating over rocky-desert-like disordered backgrounds have been identified in a novel soliton equation derived from the theory of parity-mixed superconductivity.

Highly a-axis oriented Ce_0.75Sm_0.25O_2-δ thin film fabricated on a yttria-stabilized zirconia substrate achieved oxide superionic conductivity, which can apply as an electrolyte in solid oxide fuel cells operating at medium temperature.

An investigation of a Fe spin ladder system using angle-resolved photoemission spectroscopy revealed a novel type of magnetic band splitting resembling that in altermagnets.

The statistical physics analysis of learning parametric models was revisited by combining the replica method with a grand canonical ensemble and variational approach, enabling prediction error estimation for learning systems with real data.

This study developed a first-principles tight-binding framework that systematically evaluates higher-order spin interactions to enable the quantitative analysis and design of complex magnetic properties in materials.

In high-field ESR measurements, the quantum phase transition in the S = 1/2 one-dimensional Ising-like antiferromagnet, driven by transverse magnetic fields, is strongly related to the softening of the spinon excitation.

Topochemical exchange converts Li₂CoTi₃O₈ into metastable Co₂Ti₃O₈ with a diamond network, showing strong J₁–J₂ frustration, T_N near 4.4 K, and four magnetization steps up to 50 T.

Nanodiamonds containing nitrogen-vacancy centers can be used to map pressure and nonhydrostatic stress inside diamond anvil cells to obtain micron-scale pressure landscapes that clarify local conditions affecting high-pressure materials research.

This Special Topics edition of the Journal of the Physical Society of Japan discusses the recent progress and future directions for the rapidly progressing field of photodriven quantum spin systems.