Item type |
デフォルトアイテムタイプ_(フル)(1) |
公開日 |
2023-03-18 |
タイトル |
|
|
タイトル |
Analysis of 13C-NMR spectra in C60 superconductors : Hyperfine coupling constants, electronic correlation effect, and magnetic penetration depth |
|
言語 |
en |
作成者 |
Sato, N.
Tou, Hideki
Maniwa, Y.
Kikuchi, K.
Suzuki, S.
Achiba, Y.
Kosaka, M.
Tanigaki, K.
|
アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
権利情報 |
|
|
権利情報 |
Copyright (c) 1998 The American Physical Society |
主題 |
|
|
主題Scheme |
NDC |
|
主題 |
420 |
内容記述 |
|
|
内容記述 |
A 13C-NMR anisotropic hyperfine coupling tensor was determined as 2π(-1.68, -1.68, 3.37)×106 rad/sec for C603- in A3C60 superconductors, where A is an alkali metal, by analyzing 13C-NMR spectra below 85 K. Combined with an isotropic coupling constant of (2π×0.69)×106 rad/sec, the 2s and 2p characters of the electronic wave functions at the Fermi level were deduced. The results were compatible with local-density-approximation band calculations. From a simulation of 13C-NMR spectra at superconducting state, the traceless chemical (orbital) shift tensor and isotropic chemical shift were determined as (67, 34, -101) ppm and ∼150 ppm, respectively. An estimated magnetic penetration depth is larger than 570 nm in K3C60. Furthermore, the modified Korringa relation, T1TK2∼βS (with Knight shift K, spin-lattice relaxation time T1, and Korringa constant S), clearly showed the existence of weak but substantial antiferromagnetic spin fluctuation in A3C60; β=0.40–0.58 with an error of ±20%.0 The Stoner enhancement factor was also determined as 1–1.5 from a comparison between spin susceptibility obtained from NMR and band-calculation results. |
|
言語 |
en |
出版者 |
|
|
出版者 |
American Physical Society |
言語 |
|
|
言語 |
eng |
資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1103/PhysRevB.58.12433 |
関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1103/PhysRevB.58.12433 |
収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1098-0121 |
収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA11187113 |
開始ページ |
|
|
開始ページ |
12433 |
書誌情報 |
Physical review. B
Physical review. B
巻 58,
号 18,
p. 12433-12440,
発行日 1998-11-01
|
旧ID |
14255 |