34 citations · 67 across the 9 of their papers we have counts for
11 papers · 1 filter
Triplon dynamics from partial Kondo screening in frustrated heavy-fermion systems
Hiroki Nakahara, Masahito Mochizuki, Rintaro Eto
The partially disordered (PD) phase, in which magnetically ordered and Kondo-screened sites coexist, has been proposed as a possible ground state of geometrically frustrated heavy-…
Rhombohedral Multilayer Graphene as a -Wave Magnet
Rintaro Eto, Johannes Knolle
We propose rhombohedral multilayer graphene in an applied in-plane magnetic field as a highly tunable platform for nonrelativistic collinear -wave magnetism. The orbital couplin…
Odd-parity magnons in the Haldane-Hubbard model from topological exciton condensation
Rintaro Eto, Johannes Knolle
Odd-wave magnets are the counterparts to even-wave altermagnets realizing odd-parity spin splitting. Normally discussed for noncollinear systems, they have recently been shown to a…
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…
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…
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…
Multiple Floquet Chern insulator phases in the spin-charge coupled triangular-lattice ferrimagnet: Crucial role of higher-order terms in the high-frequency expansion
Rintaro Eto, Masahito Mochizuki
We study the effects of photoirradiation with circularly polarized light on the Dirac half-metal state induced by the ferrimagnetic order in a triangular Kondo-lattice model. Our a…
Theory of collective excitations in the quadruple- magnetic hedgehog lattices
Rintaro Eto, Masahito Mochizuki
Hedgehog and antihedgehog spin textures in magnets behave as emergent monopoles and antimonopoles, which give rise to astonishing transport and electromagnetic phenomena. Using the…
Low-Energy Excitations of Skyrmion Crystals in a Centrosymmetric Kondo-Lattice Magnet: Decoupled Spin-Charge Excitations and Nonreciprocity
Rintaro Eto, Rico Pohle, Masahito Mochizuki
We theoretically study spin and charge excitations of skyrmion crystals stabilized by conduction-electron-mediated magnetic interactions via spin-charge coupling in a centrosymmetr…
Dynamical Switching of Magnetic Topology in Microwave-Driven Itinerant Magnet
Rintaro Eto, Masahito Mochizuki
We theoretically demonstrate microwave-induced dynamical switching of magnetic topology in centrosymmetric itinerant magnets by taking the Kondo-lattice model on a triangular latti…