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ID 56201
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Author
He, Tong Research Institute for Interdisciplinary Science, Okayama University
Yang, Xiaofan Research Institute for Interdisciplinary Science, Okayama University
Terao, Takahiro Research Institute for Interdisciplinary Science, Okayama University
Uchiyama, Takaki Research Institute for Interdisciplinary Science, Okayama University
Ueno, Teppei Research Institute for Interdisciplinary Science, Okayama University
Kobayashi, Kaya Research Institute for Interdisciplinary Science, Okayama University
Akimitsu, Jun Research Institute for Interdisciplinary Science, Okayama University
Miyazaki, Takafumi Research Laboratory for Surface Science, Okayama University
Nishioka, Takumi Department of Physical Science and Engineering, Nagoya Institute of Technology
Kimura, Koji Department of Physical Science and Engineering, Nagoya Institute of Technology
Hayashi, Kouichi Frontier Research Institute for Materials Science, Nagoya Institute of Technology
Happo, Naohisa Graduate School of Information Science, Hiroshima City University,
Yamaoka, Hitoshi RIKEN SPring-8 Center
Ishii, Hirofumi National Synchrotron Radiation Research Center
Liao, Yen-Fa National Synchrotron Radiation Research Center
Ota, Hiromi Advanced Science Research Center,
Goto, Hidenori Research Institute for Interdisciplinary Science, Okayama University
Kubozono, Yoshihiro Research Institute for Interdisciplinary Science, Okayama University
Abstract
We investigated the pressure dependence of electric transport and crystal structure of Ag-doped Bi2Se3. In the sample prepared by Ag doping of Bi2Se3, the Bi atom was partially replaced by Ag, i.e., Ag0.05Bi1.95Se3. X-ray diffraction patterns of Ag0.05Bi1.95Se3 measured at 0–30 GPa showed three different structural phases, with rhombohedral, monoclinic, and tetragonal structures forming in turn as pressure increased, and structural phase transitions at 8.8 and 24 GPa. Ag0.05Bi1.95Se3 showed no superconductivity down to 2.0 K at 0 GPa, but under pressure, superconductivity suddenly appeared at 11 GPa. The magnetic field (H) dependence of the superconducting transition temperature Tc was measured at 11 and 20.5 GPa, in order to investigate whether the pressure-induced superconducting phase is explained by either p-wave polar model or s-wave model.
Note
This is an article published by American Physical Society
This study was partly supported by Grants-in-Aid (Grants No. 26105004 and No. 17K05500) from MEXT, by JST ACT-C Grant No. JPMJCR12YW
Published Date
2018-03-07
Publication Title
Physical Review B
Volume
volume97
Issue
issue10
Publisher
American Physical Society
Start Page
104503
ISSN
01631829
NCID
AA11187113
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
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publisher
DOI
Web of Sience KeyUT
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isVersionOf https://doi.org/10.1103/PhysRevB.97.104503