K
Kozo Okazaki
Researcher at University of Tokyo
Publications - 93
Citations - 3180
Kozo Okazaki is an academic researcher from University of Tokyo. The author has contributed to research in topics: Superconductivity & Angle-resolved photoemission spectroscopy. The author has an hindex of 26, co-authored 83 publications receiving 2463 citations. Previous affiliations of Kozo Okazaki include Nagoya University & National Institute of Advanced Industrial Science and Technology.
Papers
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Journal ArticleDOI
Observation of topological superconductivity on the surface of an iron-based superconductor
Peng Zhang,Koichiro Yaji,Takahiro Hashimoto,Yuichi Ota,Takeshi Kondo,Kozo Okazaki,Zhijun Wang,Jinsheng Wen,Genda Gu,Hong Ding,Shik Shin +10 more
TL;DR: The researchers found that the surface of the iron superconductor FeTe0.55Se0.45 satisfies the required conditions for topological superconductivity, providing a simple and possibly high-temperature platform for realizing Majorana states.
Journal Article
Observation of topological superconductivity on the surface of iron-based superconductor
Peng Zhang,Koichiro Yaji,Takahiro Hashimoto,Yuichi Ota,Takeshi Kondo,Kozo Okazaki,Zhijun Wang,Jinsheng Wen,Genda Gu,Hong Ding,Shik Shin +10 more
TL;DR: In this paper, the surface of the iron-based superconductor FeTe0.55Se0.45 has been shown to be topologically superconducting, providing a simple and possibly high-temperature platform for realizing Majorana states.
Journal ArticleDOI
Multiple topological states in iron-based superconductors
Peng Zhang,Zhijun Wang,Xianxin Wu,Koichiro Yaji,Yukiaki Ishida,Yoshimitsu Kohama,Guangyang Dai,Yue Sun,Cédric Bareille,Kenta Kuroda,Takeshi Kondo,Kozo Okazaki,Koichi Kindo,Xiancheng Wang,Changqing Jin,Jiangping Hu,Ronny Thomale,Kazuki Sumida,Shilong Wu,Koji Miyamoto,Taichi Okuda,Hong Ding,Genda Gu,Tsuyoshi Tamegai,Takuto Kawakami,Masatoshi Sato,Shik Shin +26 more
TL;DR: In this paper, the authors identify both topological insulator and Dirac semimetal states near the Fermi energy in different iron-based high-temperature superconducting compounds.
Journal ArticleDOI
Octet-line node structure of superconducting order parameter in KFe2As2.
Kozo Okazaki,Yuichi Ota,Yoshinori Kotani,Walid Malaeb,Yukiaki Ishida,Takahiro Shimojima,Takayuki Kiss,Shuntaro Watanabe,C. T. Chen,Kunihiro Kihou,C. H. Lee,Akira Iyo,Hiroshi Eisaki,Takashi Saito,H. Fukazawa,Yoh Kohori,Kenichiro Hashimoto,Takasada Shibauchi,Yuji Matsuda,Hiroaki Ikeda,Hideyuki Miyahara,Ryotaro Arita,Ashish Chainani,Shik Shin +23 more
TL;DR: The results suggest that the A1g superconducting symmetry is universal in iron-pnictides, in spite of the variety of gap functions.
Journal ArticleDOI
Observation of topological superconductivity on the surface of an iron-based superconductor
Peng Zhang,Koichiro Yaji,Takahiro Hashimoto,Yuichi Ota,Takeshi Kondo,Kozo Okazaki,Zhijun Wang,Jinsheng Wen,Genda Gu,Hong Ding,Shik Shin +10 more
TL;DR: In this paper, the surface states of FeTe0.55Se0.45 are shown to be 2D topologically superconducting, and thus provide a simple and possibly high-Tc platform for realizing Majorana fermions.