R
Ryotaro Arita
Researcher at University of Tokyo
Publications - 452
Citations - 22757
Ryotaro Arita is an academic researcher from University of Tokyo. The author has contributed to research in topics: Hubbard model & Superconductivity. The author has an hindex of 65, co-authored 411 publications receiving 18054 citations. Previous affiliations of Ryotaro Arita include National Presto Industries & Max Planck Society.
Papers
More filters
Journal ArticleDOI
Unconventional Pairing Originating from the Disconnected Fermi Surfaces of Superconducting LaFeAsO 1-x F x
Kazuhiko Kuroki,Seiichiro Onari,Ryotaro Arita,Hidetomo Usui,Yukio Tanaka,Hiroshi Kontani,Hideo Aoki +6 more
TL;DR: It is concluded that the multiple spin-fluctuation modes arising from the nesting across the disconnected Fermi surfaces realize an extended s-wave Pairing, while d-wave pairing can also be another candidate.
Journal ArticleDOI
Superconducting Dome in a Gate-Tuned Band Insulator
TL;DR: A large enhancement in the transition temperature Tc occurring at optimal doping in the chemically inaccessible low–carrier density regime is revealed, indicating that the superconducting dome may arise even in doped band insulators.
Journal ArticleDOI
Giant Rashba-type spin splitting in bulk BiTeI
Kyoko Ishizaka,Mohammad Saeed Bahramy,H. Murakawa,M. Sakano,Takahiro Shimojima,T. Sonobe,K. Koizumi,Shik Shin,Hirokazu Miyahara,Akio Kimura,Koji Miyamoto,Taichi Okuda,Hirofumi Namatame,Masaki Taniguchi,Masaki Taniguchi,Ryotaro Arita,Naoto Nagaosa,Kensuke Kobayashi,Youichi Murakami,Reiji Kumai,Reiji Kumai,Yoshio Kaneko,Yoshinori Onose,Yoshinori Tokura +23 more
TL;DR: The finding of a huge spin-orbit interaction effect in a polar semiconductor composed of heavy elements, BiTeI, where the bulk carriers are ruled by large Rashba-likespin splitting is described, confirming that the spin splitting is indeed derived from bulk atomic configurations.
Journal ArticleDOI
Pnictogen height as a possible switch between high- T c nodeless and low- T c nodal pairings in the iron-based superconductors
TL;DR: In this paper, the effect of the lattice structure on spin-fluctuation-mediated superconductivity in the iron pnictides was studied and a random phase approximation was applied to the models to solve the Eliashberg equation.
Journal ArticleDOI
Zeeman-type spin splitting controlled by an electric field
Hongtao Yuan,Hongtao Yuan,Mohammad Saeed Bahramy,Mohammad Saeed Bahramy,K. Morimoto,Sanfeng Wu,Kentaro Nomura,Kentaro Nomura,Bohm-Jung Yang,Hidekazu Shimotani,Hidekazu Shimotani,Ryuji Suzuki,Minglin Toh,Christian Kloc,Xiaodong Xu,Ryotaro Arita,Ryotaro Arita,Naoto Nagaosa,Naoto Nagaosa,Yoshihiro Iwasa,Yoshihiro Iwasa +20 more
TL;DR: In this paper, it was shown that spin polarization can also be achieved without the need for magnetism by using the unique crystal symmetry of tungsten selenide, which creates a Zeeman-like effect when a monolayer of the material is exposed to an external electric field.