18 citations · 38 across the 13 of their papers we have counts for
14 papers
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-…
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…
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…
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…
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…
Machine-Learning Detection of the Berezinskii-Kosterlitz-Thouless Transitions
Masahito Mochizuki, Yusuke Miyajima
The Berezinskii-Kosterlitz-Thouless (BKT) transition is a typical topological phase transition defined between binding and unbinding states of vortices and antivortices, which is n…
Modeling and Physics of Multiferroic Perovskite Manganites
Masahito Mochizuki
A new type of multiferroicity was experimentally discovered in 2003 in a perovskite manganite TbMnO where its ferroelectricity is induced by cycloidally ordered Mn spins. Suseq…
Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
Yuto Ohki, Masahito Mochizuki
Magnetic skyrmions are topological spin textures that appear in magnets with broken spatial inversion symmetry via competition between the (anti)ferromagnetic exchange interactions…
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…
Proposed modified computational model for the amoeba-inspired combinatorial optimization machine
Yusuke Miyajima, Masahito Mochizuki
A single-celled amoeba can solve the traveling salesman problem through its shape-changing dynamics. In this paper, we examine roles of several elements in a previously proposed co…
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…
Theoretical study on the slit experiments in the Rashba electron systems
Kotaro Shimizu, Masahito Mochizuki
We develop a theory of designing slit experiments in two-dimensional electron systems with the Rashba spin-orbit interaction. By simulating the spatiotemporal dynamics of electrons…