620 citations · 3.8k across the 93 of their papers we have counts for
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Spin and chiral orderings of the antiferromagnetic XY model on the triangular lattice and their critical properties
Tomoyuki Obuchi, Hikaru Kawamura
We study the antiferromagnetic {\it XY} model on a triangular lattice by extensive Monte Carlo simulations, focusing on its ordering and critical properties. Our result clearly sho…
Finite-temperature transition of the distorted kagome-lattice Heisenberg antiferromagnet
Hiroshi Masuda, Tsuyoshi Okubo, Hikaru Kawamura
Motivated by the recent experiment on kagome-lattice antiferromagnets, we study the zero-field ordering behavior of the antiferromagnetic classical Heisenberg model on a uniaxially…
Statistical Physics of Fracture, Friction and Earthquake
Hikaru Kawamura, Takahiro Hatano, Naoyuki Kato +2
We review the present status of our research and understanding regarding the dynamics and the statistical properties of earthquakes, mainly from a statistical physical viewpoint. E…
Multiple-q states and skyrmion lattice of the triangular-lattice Heisenberg antiferromagnet under magnetic fields
Tsuyoshi Okubo, Sungki Chung, Hikaru Kawamura
Ordering of the frustrated classical Heisenberg model on the triangular-lattice with an incommensurate spiral spin structure is studied under magnetic fields by means of a mean-fie…
Cubic and non-cubic multiple-q states in the Heisenberg antiferromagnet on the pyrochlore lattice
Tsuyoshi Okubo, Trung Hai Nguyen, Hikaru Kawamura
The ordering of the classical Heisenberg model on the pyrochlore lattice with the antiferromagnetic nearest-neighbor interaction J1 and the ferromagnetic next-nearest-neighbour int…
Spin-chirality decoupling and critical properties of a two-dimensional fully frustrated XY model
Soichirou Okumura, Hajime Yoshino, Hikaru Kawamura
We study the ordering of the spin and the chirality in the fully frustrated XY model on a square lattice by extensive Monte Carlo simulations. Our results indicate unambiguously th…