86 citations · 230 across the 11 of their papers we have counts for
11 papers
Classification of magnon thermal Hall systems based on U(1) to non-Abelian gauge fields
Masataka Kawano, Chisa Hotta
Magnon thermal Hall effect in insulating magnets is the manifestation of Berry curvature in magnon bands, which is formulated using the emergent gauge fields that act on magnons as…
Unconventional spin transport in strongly correlated kagome systems
Masataka Kawano, Frank Pollmann, Michael Knap
Recent progress in material design enables the study of correlated, low-temperature phases and associated anomalous transport in two-dimensional kagome systems. Here, we show that…
Sine-square deformed mean-field theory
Masataka Kawano, Chisa Hotta
We develop a theory that accurately evaluates quantum phases with any large-scale emergent structures including incommensurate density waves or topological textures without {\it a…
Emergent SU(3) magnons and thermal Hall effect in the antiferromagnetic skyrmion lattice
Hikaru Takeda, Masataka Kawano, Kyo Tamura +9
Complexity of quantum phases of matter is often understood by the underlying gauge structures, as was recognized by the and U(1) gauge theory description of spin liq…
Emergent chiral symmetry in non-bipartite kagome and pyrochlore lattices with spin-orbit coupling
Hiroki Nakai, Masataka Kawano, Chisa Hotta
Chiral symmetry in energy bands appears as perfectly symmetric anti-bonding and bonding pairs of energy levels. It has only been observed in a few classes of models with a bipartit…
Phase diagram of the square lattice Hubbard model with Rashba-type antisymmetric spin-orbit coupling
Masataka Kawano, Chisa Hotta
We clarify the ground state phase diagram of the half-filled square-lattice Hubbard model with Rashba spin-orbit coupling (SOC) characterized by the spin-split energy bands due to…
Comparative study of the density matrix embedding theory for the Hubbard models
Masataka Kawano, Chisa Hotta
We examine the performance of the density matrix embedding theory (DMET) recently proposed in [G. Knizia and G. K.-L. Chan, Phys. Rev. Lett. 109, 186404 (2012)]. The core of this m…
Discovering momentum-dependent magnon spin texture in insulating antiferromagnets: Role of the Kitaev interaction
Masataka Kawano, Chisa Hotta
We theoretically show that the Kitaev interaction generates a novel class of spin texture in the excitation spectrum of the antiferromagnetic insulator found in the Kitaev-Heisenbe…
Thermal Hall effect and topological edge states in a square lattice antiferromagnet
Masataka Kawano, Chisa Hotta
We show that the two dimensional spatial inversion-symmetry (SIS) broken square lattice antiferromagnet with easy-plane spin anisotropy exhibits a thermal Hall effect and the edge…
Designing Rashba-Dresselhaus effect in magnetic insulators
Masataka Kawano, Yoshinori Onose, Chisa Hotta
One of the major strategies to control magnetism in spintronics is to utilize the coupling between electron spin and its orbital motion. The Rashba and Dresselhaus spin-orbit coupl…
Microwave non-reciprocity of magnon excitations in a non-centrosymmetric antiferromagnet BaMnGeO
Y. Iguchi, Y. Nii, M. Kawano +3
We have investigated the microwave non-reciprocity for a non-centrosymmetric antiferromagnet BaMnGeO. The magnon modes expected by the conventional spin wave theory for…