6 papers
Nonlocal Kondo-exchange-driven intrinsic anomalous Hall effect in localized- antiferromagnetic metals
Akimitsu Kirikoshi, Junya Otsuki
The anomalous Hall effect in antiferromagnetic metals has attracted considerable attention. Most known realizations involve itinerant electrons that simultaneously mediate char…
Light-induced nonlinear Edelstein effect under ferroaxial ordering
Akimitsu Kirikoshi, Satoru Hayami
Ferroaxial ordering, a spontaneous rotational distortion of the atomic arrangement, brings about a cross-product-type spin-orbit coupling (SOC) manifested as an electric toroidal d…
Magneto-optical imaging of macroscopic altermagnetic domains in MnTe
Gakuto Watanabe, Soichiro Yamane, Ryotaro Maki +6
Altermagnets are a new class of magnets accompanying global time-reversal symmetry breaking (TRSB) without net magnetization. The TRSB results in formation of novel altermagnetic d…
Multipolar fluctuations from localized 4f electrons in CeRh2As2
Koki Numa, Eri Matsuda, Akimitsu Kirikoshi +1
The heavy-fermion superconductor CeRh2As2 exhibits a non-superconducting phase transition that precedes the emergence of superconductivity. The nature of the corresponding order pa…
From localized 4f electrons to anisotropic exchange interactions in ferromagnetic CeRh6Ge4
Shoichiro Itokazu, Akimitsu Kirikoshi, Harald O. Jeschke +1
CeRh6Ge4 is a cerium-based ferromagnetic material exhibiting a quantum critical behavior under pressure. We derive effective exchange interactions, using the framework of density f…
Finite- antiferrotoroidal and ferritoroidal order in a distorted kagome structure
Akimitsu Kirikoshi, Satoru Hayami
A highly geometrically frustrated lattice structure such as a distorted kagome (or quasikagome) structure enriches physical phenomena through coupling with the electronic structure…