| Item type |
itemtype_ver1(1) |
| 公開日 |
2021-12-10 |
| タイトル |
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タイトル |
Local Observations of Orbital Diamagnetism and Excitation in Three-Dimensional Dirac Fermion Systems Bi1−xSbx |
|
言語 |
en |
| 著者 |
Watanabe, Yukihiro
Kumazaki, Masashi
Ezure, Hiroki
Sasagawa, Takao
Cava, Robert
Itoh, Masayuki
Shimizu, Yasuhiro
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利 |
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言語 |
en |
|
権利情報 |
Copyright ©2021 The Physical Society of Japan 日本物理学会 |
| 内容記述 |
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内容記述タイプ |
Abstract |
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内容記述 |
irac fermions display a singular response against magnetic and electric fields. A distinct manifestation is the large diamagnetism originating in the interband effect of Bloch bands, as observed in bismuth alloys. Through 209Bi NMR spectroscopy, we extract diamagnetic orbital susceptibility inherent to Dirac fermions in the semiconducting bismuth alloys Bi1−xSbx (x = 0.08–0.16). The 209Bi hyperfine coupling constant provides an estimate of the effective orbital radius. In addition to the interband diamagnetism, the NMR shift includes an anomalous temperature-independent term originating in the enhanced intraband diamagnetism under strong spin–orbit coupling. The nuclear spin–lattice relaxation rate 1/T1 is dominated by orbital excitation and follows cubic temperature dependence in an extensive temperature range. The result demonstrates the robust diamagnetism and low-lying orbital excitation against the small gap opening, whereas x-dependent spin excitation appears at low temperatures. |
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言語 |
en |
| 出版者 |
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出版者 |
日本物理学会 |
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言語 |
ja |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
AM |
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出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
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|
関連タイプ |
isVersionOf |
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|
識別子タイプ |
DOI |
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関連識別子 |
https://doi.org/10.7566/JPSJ.90.053701 |
| 収録物識別子 |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0031-9015 |
| 書誌情報 |
en : Journal of the Physical Society of Japan
巻 90,
号 5,
p. 053701,
発行日 2021-05-15
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| ファイル公開日 |
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日付 |
2022-05-15 |
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日付タイプ |
Available |
JPSJ_Microscopic_observation_of_diamagnetism_and_orbital_excitation.pdf (449 KB)
