3 papers
cond-mat.mtrl-sci2025
Thermodynamic formulation of the spin magnetic octupole moment in bulk crystals
Jun Åiké, Robert Peters, Koki Shinada
The discovery of unconventional antiferromagnets, such as altermagnets, has drawn significant attention to higher-rank magnetic multipoles, particularly magnetic octupoles. Despite…
cond-mat.supr-con2024
Thermodynamic relations for the Cooper pair's momentum in helical superconductors
Koki Shinada, Robert Peters
Two thermodynamic relations are proposed for the exact measurement of the center-of-mass (COM) momentum of the Cooper pairs in helical superconductors. The first relation concerns…
cond-mat.mtrl-sci2024
Nonlinear Magnetoelectric Effect under Magnetic Octupole Order: Its Application to a -Wave Altermagnet and a Pyrochlore Lattice with All-In/All-Out Magnetic Order
Jun Åiké, Koki Shinada, Robert Peters
Extensive investigation has recently been conducted into a new class of antiferromagnetic order known as magnetic octupole order. However, the high rank of octupoles makes it diffi…