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Nonlinear Transverse Magnetic Susceptibility under Electric Toroidal Dipole Ordering
Akane Inda, Satoru Hayami
An electric toroidal dipole (ETD) moment is one of the fundamental dipole moments as well as electric and magnetic ones. Although it directly couples to neither an electric nor mag…
Microscopic mechanism for intrinsic nonlinear anomalous Hall conductivity in noncollinear antiferromagnetic metals
Akimitsu Kirikoshi, Satoru Hayami
We theoretically investigate an intrinsic nonlinear anomalous Hall effect (INAHE) in space-time () symmetric antiferromagnetic metals. The INAHE is characterized by a…
Ferroaxial moment induced by vortex spin texture
Satoru Hayami
The nature of an electric ferro-axial moment characterizing a time-reversal-even axial-vector quantity is theoretically investigated under magnetic orderings. We clarify that a vor…
Widely-sweeping magnetic field-temperature phase diagrams for skyrmion-hosting centrosymmetric tetragonal magnets
Satoru Hayami, Yasuyuki Kato
We numerically investigate the stabilization mechanisms of skyrmion crystals under thermal fluctuations and external magnetic field in itinerant centrosymmetric tetragonal magnets.…
Ferrochiral, antiferrochiral, and ferrichiral skyrmion crystals in an itinerant honeycomb magnet
Ryota Yambe, Satoru Hayami
Topological spin textures, such as a skyrmion crystal, are a source of unusual physical phenomena owing to the interplay between magnetism and topology. Since physical phenomena de…
Skyrmion and vortex crystals in the Hubbard model
Kaito Kobayashi, Satoru Hayami
A mutual interplay between the charge and spin degrees of freedom in itinerant magnets leads to a plethora of topological spin textures, such as magnetic skyrmion and vortex crysta…