Electronic structure and the valence state of Yb2Pd2Sn and YbPd2Sn studied by photoelectron and resonant x-ray emission spectroscopies
Physical Review B Volume 86 Issue 8
Page 085137-
published_at 2012
アクセス数 : 1238 件
ダウンロード数 : 270 件
今月のアクセス数 : 2 件
今月のダウンロード数 : 3 件
この文献の参照には次のURLをご利用ください : https://ir.lib.hiroshima-u.ac.jp/00033908
File |
PhysRevB.86.085137.pdf
1.93 MB
種類 :
fulltext
|
Title ( eng ) |
Electronic structure and the valence state of Yb2Pd2Sn and YbPd2Sn studied by photoelectron and resonant x-ray emission spectroscopies
|
Creator |
Yamaoka Hitoshi
Thunström Patrik
Tsujii Naohito
Jarrige Ignace
Arita Masashi
Hayashi Hirokazu
Jiang Jian
Hiraoka Nozomu
Ishii Hirofumi
Tsuei Ku-Ding
Giovannini Mauro
Bauer Ernst
|
Source Title |
Physical Review B
|
Volume | 86 |
Issue | 8 |
Start Page | 085137 |
Abstract |
We have examined the electronic structure of the heavy fermion Yb2Pd2Sn in comparison with the superconductor YbPd2Sn by means of high-resolution photoelectron spectroscopy (PES) and resonant x-ray emission spectroscopy (RXES). The PES data are interpreted in light of the density of states calculated within the local density approximation plus the dynamical mean-field theory. Our analysis of the RXES data shows that the valence of Yb in Yb2Pd2Sn is weakly fluctuating, indicating weak but finite c–f hybridization, and decreases slightly with temperature. In contrast, the Yb valence in YbPd2Sn is nearly 3+ and does not show any temperature dependence, suggesting that the Yb 4f electrons are localized and the superconductivity is due to the Pd conduction electrons. The constant initial state spectra at the Yb 4d–4f resonance for Yb2Pd2Sn clearly show resonant behavior for Yb3+ and antiresonance for Yb2+, indicating that the Yb3+ and Yb2+ states are intimately correlated.
|
NDC |
Physics [ 420 ]
|
Language |
eng
|
Resource Type | journal article |
Publisher |
American Physical Society
|
Date of Issued | 2012 |
Rights |
(c) 2012 American Physical Society
|
Publish Type | Version of Record |
Access Rights | open access |
Source Identifier |
[ISSN] 1098-0121
[DOI] 10.1103/PhysRevB.86.085137
[NCID] AA11187113
[DOI] http://dx.doi.org/10.1103/PhysRevB.86.085137
|