11 citations · 20 across the 10 of their papers we have counts for
10 papers
Magnetic field effects on spin-split band and magnon transport in altermagnets and emergent compensated ferrimagnets
Kazushi Aoyama, Hikaru Kawamura
In altermagnets and fully compensated ferrimagnets, not only the electron band but also the magnon band exhibits spin splitting without net magnetization, which enables thermal act…
Spatiotemporal Structures of Parametrically Driven Nonlinear Lattices
Yu Funami, Kazushi Aoyama
We theoretically investigate the effects of parametric driving on the one-dimensional Frenkel-Kontorova model, a nonlinear many-body lattice system. It is numerically found that a…
The second altermagnet candidate in organic conductors: -(BEDT-TTF)-HOOCCHSO
Kohei Tokura, Takato Masuta, Kazushi Aoyama +3
We have developed a novel BEDT-TTF-based organic conductor, -(BEDT-TTF)-HOOCCHSO (--SBA), and propose it as a candidate for altermagnet. Tight-binding ba…
Triple- collinear state with compensated ferrimagnetic nature on frustrated kagome lattice
Kazushi Aoyama, Hikaru Kawamura
Spin-selective band splitting without net magnetization and spin-orbit couplings serves for a next-generation spin-current generator, and its typical platforms are altermagnets and…
Observation of the crossover from quantum fluxoid to half-quantum fluxoid in a chiral superconducting device
Masashi Tokuda, Fumiya Matsumoto, Noriaki Maeda +16
Topological superconductors are one of the intriguing material groups from the viewpoint of not only condensed matter physics but also industrial application such as quantum comput…
RKKY interaction in the presence of a charge-density-wave order
Kazushi Aoyama
Effects of a charge-density-wave (CDW) order on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction has been theoretically investigated. Assuming that the CDW with an incommensura…
Effects of frequency mixing on Shapiro-step formations in sliding charge-density-waves
Yu Funami, Kazushi Aoyama
A one-dimensional charge density wave (CDW) is driven to slide by a dc electric field, carrying an electric current. In an additional ac field with frequency , it…
Stripe order and diode effect in two-dimensional Rashba superconductors
Kazushi Aoyama
In two-dimensional superconductors with a Rashba-type spin-orbit coupling, it is known that an in-plane magnetic field can induce a helical superconducting (SC) state with a phase…
Spin dynamics simulation of the -vortex fluctuations
Yo P. Mizuta, Kazuki Aoyama, Keisuke Tomiyasu +2
Motivated by the recent quasi-elastic neutron scattering experiment, we extend the spin-dynamics simulation on the triangular-lattice Heisenberg antiferromagnet, to observe a sharp…
Orbital order and Hund's rule frustration in Kondo lattices
L. Isaev, K. Aoyama, I. Paul +1
We analyze a microscopic origin of the Kondo effect-assisted orbital order in heavy-fermion materials. By studying the periodic two-orbital Anderson model with two local electrons,…