Photoemission study of Ca-intercalated graphite superconductor CaC<sub>6</sub>

Okazaki, Hiroyuki; Yoshida, Rikiya; Iwai, Keisuke; Noami, Kengo; Muro, Takayuki; Nakamura, Tetsuya; Wakita, Takanori; Muraoka, Yuji; Hirai, Masaaki; Tomioka, Fumiaki; Takano, Yoshihiko; Takenaka, Asami; Toyoda, Masahiro; Oguch, Tamio; Yokoya, Takayoshi

doi:10.1016/j.physc.2009.10.039

Permalink : https://ousar.lib.okayama-u.ac.jp/48847

ID	48847
フルテキストURL	PhysicaC-SuperconductivityApplications_470_S1_637-638.pdf 142 KB
著者	Okazaki, Hiroyuki The Graduate School of Natural Science and Technology, Okayama University Yoshida, Rikiya The Graduate School of Natural Science and Technology, Okayama University Iwai, Keisuke The Graduate School of Natural Science and Technology, Okayama University Noami, Kengo The Graduate School of Natural Science and Technology, Okayama University Muro, Takayuki Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8 Nakamura, Tetsuya Japan Synchrotron Radiation Research Institute (JASRI)/SPring-8 Wakita, Takanori Core Research for Evolutional Science and Technology (CREST), Japan Science and Technology Agency Muraoka, Yuji The Graduate School of Natural Science and Technology, Okayama University Kaken ID researchmap Hirai, Masaaki The Graduate School of Natural Science and Technology, Okayama University Tomioka, Fumiaki National Institute for Materials Science (NIMS) Takano, Yoshihiko National Institute for Materials Science (NIMS) Takenaka, Asami Faculty of Engineering, Oita University Toyoda, Masahiro Faculty of Engineering, Oita University Oguch, Tamio Department of Quantum Matter, Graduate School of Advanced Sciences of Matter (ADSM) Yokoya, Takayoshi The Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID publons researchmap
抄録	In this work, we have performed resonant photoemission studies of Ca-intercalated graphite superconductor CaC6. Using photon energy of the Ca 2p-3d threshold, the photoemission intensity of the peak at Fermi energy (E-F) is resonantly enhanced. This result provides spectroscopic evidence for the existence of Ca 3d states at E-F, and strongly supports that Ca 3d state plays a crucial role for the superconductivity of this material with relatively high T-c.
発行日	2010-12
出版物タイトル	Physica C-Superconductivity and its Applications
巻	470巻
号	S1号
出版者	Elsevier
開始ページ	S637
終了ページ	S638
ISSN	0921-4534
NCID	AA11461984
資料タイプ	学術雑誌論文
プロジェクト	エネルギー環境新素材拠点
オフィシャル URL	http://www.sciencedirect.com/science/article/pii/S0921453409005978
言語	英語
著作権者	Copyright © 2009 Elsevier B.V. All rights reserved.
論文のバージョン	author
査読	有り
DOI	10.1016/j.physc.2009.10.039
Web of Science KeyUT	000286075700272