9 papers
Fate of Topological Dirac Magnons in van der Waals Ferromagnets at Finite Temperature
Rintaro Eto, Ignacio Salgado-Linares, Masahito Mochizuki +2
Dirac magnons, the bosonic counterparts of Dirac fermions in graphene, provide a unique platform to explore symmetry-protected band crossings and quantum geometry in magnetic insul…
Spontaneous magnon decays from nonrelativistic time-reversal symmetry breaking in altermagnets
Rintaro Eto, Matthias Gohlke, Jairo Sinova +3
Quasiparticles are central to condensed matter physics, but their stability can be undermined by quantum many-body interactions. Magnons, quasiparticles in quantum magnets, are par…
Predicted versatile topological nodal magnons in Tb-based icosahedral quasicrystal 1/1 approximants
Rintaro Eto, Masahito Mochizuki, Shinji Watanabe
Using a recently-established band representation analysis, we discover two distinct types of topological nodal magnons in the real-space antiferroic ordering of whirling spin arran…
Theory of Photocurrent and High-Harmonic Generation with Chiral Fermions
Yuya Ominato, Masahito Mochizuki
We theoretically discover possible dc-current induction and high-harmonic generation from photodriven chiral fermions in B20-type semimetals irradiated with circularly polarized li…
Photoinduced magnetic phase transitions in the cubic Kondo-lattice model
Ryo Hamano, Masahito Mochizuki
We theoretically study photoinduced magnetic phase transitions and their dynamical processes in the Kondo-lattice model on a cubic lattice. It is demonstrated that light irradiatio…
Theoretical studies on the spin-charge dynamics in Kondo-lattice models
Masahito Mochizuki, Rintaro Eto
The Kondo-lattice model describes a typical spin-charge coupled system in which localized spins and itinerant electrons are strongly coupled via exchange interactions and exhibits…