Ultrahigh-resolution laser photoemission study of URu<sub>2</sub>Si<sub>2</sub> across the hidden-order transition

Yoshida, Rikiya; Nakamura, Yoshiaki; Fukui, Masaki; Haga, Yoshinori; Yamamoto, Etsuji; Ōnuki, Yoshichika; Okawa, Mario; Shin, Shik; Hirai, Masaaki; Muraoka, Yuji; Yokoya, Takayoshi

doi:10.1016/j.jpcs.2010.10.048

Permalink : http://escholarship.lib.okayama-u.ac.jp/48768

ID	48768
フルテキストURL	JPhysicsChemistrySolids_72_5_580-581.pdf 165 KB
著者	Yoshida, Rikiya The Graduate School of Natural Science and Technology, Okayama University Nakamura, Yoshiaki The Graduate School of Natural Science and Technology, Okayama University Fukui, Masaki The Graduate School of Natural Science and Technology, Okayama University Haga, Yoshinori Advanced Science Research Center, Japan Atomic Energy Agency Yamamoto, Etsuji Advanced Science Research Center, Japan Atomic Energy Agency Ōnuki, Yoshichika Advanced Science Research Center, Japan Atomic Energy Agency Okawa, Mario Institute for Solid State Physics, The University of Tokyo Shin, Shik Institute for Solid State Physics, The University of Tokyo Hirai, Masaaki The Graduate School of Natural Science and Technology, Okayama University Muraoka, Yuji The Graduate School of Natural Science and Technology, Okayama University Kaken ID researchmap Yokoya, Takayoshi The Graduate School of Natural Science and Technology, Okayama University ORCID Kaken ID publons researchmap
抄録	We have studied the electronic structures of URu₂Si₂ employing ultrahigh-resolutionlaser angle-resolved photoemission spectroscopy. The change of photoemission spectra is investigated across the hidden-ordertransition, and the emergence of a narrow band is clearly observed near the Fermi level for both (π,0) and (π,π) directions. In addition, it is shown that tuning of light's polarization allows the signal of a hole-like dispersive feature to enhance. These observations prove that laser angle-resolved photoemission spectroscopy is an effective tool for studying the evolution of electronic structures across the hidden-ordertransition in URu₂Si₂.
キーワード	Electronic structure Laser angle-resolved photoemission spectroscopy URu<sub>2</sub>Si<sub>2</sub> Hidden order
発行日	2011-05-01
出版物タイトル	Journal of Physics and Chemistry of Solids
巻	72巻
号	5号
開始ページ	580
終了ページ	581
ISSN	0022-3697
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/S0022369710003525
言語	英語
著作権者	Copyright © 2010 Elsevier Ltd. All rights reserved.
論文のバージョン	author
査読	有り
DOI	10.1016/j.jpcs.2010.10.048
Web of Science KeyUT	000291518100070