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ID 53418
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Author
Terashima, Kensei Kakenhi
Sonoyama, Junki
Wakita, Takanori Kakenhi
Sunagawa, Masanori
Ono, Kanta
Kumigashira, Hiroshi
Muro, Takayuki
Nagao, Masanori
Watauchi, Satoshi
Tanaka, Isao
Okazaki, Hiroyuki
Takano, Yoshihiko
Miura, Osuke
Mizuguchi, Yoshikazu
Usui, Hidetomo
Suzuki, Katsuhiro
Kuroki, Kazuhiko
Muraoka, Yuji Kakenhi
Yokoya, Takayoshi ORCID Kakenhi
Abstract
The electronic structure of nearly optimally doped novel superconductor LaO1−xFxBiS2(x = 0.46) was investigated using angle-resolved photoemission spectroscopy (ARPES). We clearly observed band dispersions from 2 to 6 eV binding energy and near the Fermi level (EF), which are well reproduced by first-principles calculations when the spin-orbit coupling is taken into account. The ARPES intensity map near EF shows a squarelike distribution around the (Z) point in addition to electronlike Fermi-surface (FS) sheets around the X(R) point, indicating that FS of LaO0.54F0.46BiS2 is in close proximity to the theoretically predicted topological change.
Published Date
2014-12-22
Publication Title
Physical Review B
Volume
volume90
Issue
issue22
Publisher
The American Physical Society
ISSN
1098-0121
Content Type
Journal Article
Official Url
http://journals.aps.org/prb/abstract/10.1103/PhysRevB.90.220512
language
英語
Copyright Holders
©2014 American Physical Society
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publisher
Refereed
True
DOI
Web of Sience KeyUT