Dispersive x-ray absorption studies at the Fe K-edge on the iron chalcogenide superconductor FeSe under pressure

被引：11

作者：

Bendele, M. ^{[1
]}

Marini, C. ^{[2
]}

Joseph, B. ^{[1
]}

Simonelli, L. ^{[2
]}

Dore, P. ^{[1
,3
]}

Pascarelli, S. ^{[2
]}

Chikovani, M. ^{[4
]}

Pomjakushina, E. ^{[4
]}

Conder, K. ^{[4
]}

Saini, N. L. ^{[1
]}

Postorino, P. ^{[1
,5
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] European Synchrotron Radiat Facil, F-38043 Grenoble, France

[3] Univ Roma La Sapienza, CNR SPIN, I-00185 Rome, Italy

[4] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland

[5] Univ Roma La Sapienza, CNR IOM, I-00185 Rome, Italy

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2013年 / 25卷 / 42期

基金：

瑞士国家科学基金会;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTIVITY; ELECTRONIC-STRUCTURE; SPECTROSCOPY; PHASE;

D O I：

10.1088/0953-8984/25/42/425704

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The local structure and the electronic properties of FeSe under hydrostatic pressure were studied by means of dispersive x-ray absorption measurements at the Fe K-edge. The pressure dependence of the x-ray absorption near edge structure features seems to follow the behavior of the superconducting transition temperature T-c. The local structure, that has an important impact on the superconducting properties, appears to fall into two regimes: the pressure dependence of the Fe-Fe bond distance shows a clear change in the compressibility at p similar to 5 GPa; in contrast, the Fe-Se bond distance decreases continuously with increasing pressure with a lower compressibility than the Fe-Fe bond. The results suggest that the pressure dependent changes in T-c of FeSe are closely related to the changes in local structure.

引用

页数：5

共 50 条

[11] X-RAY K-EDGE ABSORPTION OF KRYPTON PHYSISORBED ON GRAPHITE
YANOF, AW
DAIL, HW
BROWN, GS
BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1978, 23 (03): : 293 - 293
[12] X-ray absorption in atomic Cd in the K-edge region
Kodre, A
Gomilsek, JP
Mihelic, A
Arcon, I
RADIATION PHYSICS AND CHEMISTRY, 2006, 75 (02) : 188 - 194
[13] X-ray absorption in atomic iodine in the K-edge region
Gomilsek, J. Padeznik
Arcon, I.
de Panfilis, S.
Kodre, A.
PHYSICAL REVIEW A, 2009, 79 (03):
[14] X-RAY ABSORPTION-SPECTROSCOPY STUDIES OF THE K-EDGE OF SELECTED IRON COMPOUNDS USING SYNCHROTRON RADIATION
NOLTING, HF
EGGERS, P
HENKEL, G
KREBS, B
HERMES, C
PETTIFER, RF
FOULIS, DL
ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 1987, 178 (1-4): : 174 - 176
[15] New insights into the electronic structure of iron porphyrins using Fe K-edge X-ray absorption spectroscopy.
Jones, RM
DeWitt, JG
Gold, A
Jayaraj, K
Kirk, ML
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1999, 217 : U1067 - U1067
[16] New insights into the electronic structure of iron porphyrins by iron K-edge X-ray absorption spectroscopy
Jones, RM
DeWitt, JG
Gold, A
Jayaraj, K
Kirk, ML
JOURNAL OF INORGANIC BIOCHEMISTRY, 1999, 74 (1-4) : 144 - 144
[17] Palladium K-edge X-ray Absorption Spectroscopy Studies on Controlled Ligand Systems
Westawker, Luke P.
Khusnutdinova, Julia K.
Wallick, Rachel F.
Mirica, Liviu M.
INORGANIC CHEMISTRY, 2023, 62 (51) : 21128 - 21137
[18] Iron distribution in the octahedral sheet of dioctahedral smectites. An Fe K-edge X-ray absorption spectroscopy study
D. Vantelon
E. Montarges-Pelletier
L. J. Michot
M. Pelletier
F. Thomas
V. Briois
Physics and Chemistry of Minerals, 2003, 30 : 44 - 53
[19] Alpha particle damage in biotite characterized by microfocus X-ray diffraction and Fe K-edge X-ray absorption spectroscopy
Pattrick, R. A. D.
Charnock, J. M.
Geraki, T.
Mosselmans, I. F. W.
Pearce, C. I.
Pimblott, S.
Droop, G. T. R.
MINERALOGICAL MAGAZINE, 2013, 77 (06) : 2867 - 2882
[20] Sulfur k-edge X-ray absorption spectroscopy of fuels: A retrospective
George, Graham N.
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2007, 234

← 1 2 3 4 5 →