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
收藏
页数：5
相关论文
共 50 条
  • [41] X-ray absorption near-edge spectroscopy (XANES) at the phosphorus K-edge of triorganophosphinechalcogenides
    Engemann, C
    Franke, R
    Hormes, J
    Lauterbach, C
    Hartmann, E
    Clade, J
    Jansen, M
    CHEMICAL PHYSICS, 1999, 243 (1-2) : 61 - 75
  • [42] The blue colouring of beryls from Licungo, Mozambique: an X-ray absorption spectroscopy study at the iron K-edge
    Figueiredo, M. O.
    da Silva, T. Pereira
    Veiga, J. P.
    Gomes, C. Leal
    De Andrade, V.
    MINERALOGICAL MAGAZINE, 2008, 72 (01) : 175 - 178
  • [43] CONDUCTION BANDS IN CUCL AND CUI BY X-RAY ABSORPTION AT K-EDGE AND L-EDGE
    HAMZA, S
    KHAN, MA
    LEWONCZUK, S
    RINGEISSEN, J
    PETIAU, J
    SAINCTAVIT, P
    SOLID STATE COMMUNICATIONS, 1990, 75 (01) : 29 - 33
  • [44] C K-edge x-ray absorption near-edge structure of carbon nanotubes
    Imamura, Motoyasu
    Shimada, Hiromichi
    Matsubayashi, Nobuyuki
    Yumura, Motoo
    Uchida, Kunio
    Oshima, Satoshi
    Kuriki, Yasunori
    Yoshimura, Yuji
    Sato, Toshio
    Nishjima, Akio
    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, 1994, 33 (7 B): : 1016 - 1018
  • [45] The Cr X-ray absorption K-edge structure of poorly crystalline Fe(III)-Cr(III)-oxyhydroxides
    Frommer, Jakob
    Nachtegaal, Maarten
    Czekaj, Izabela
    Kretzschmar, Ruben
    AMERICAN MINERALOGIST, 2010, 95 (8-9) : 1202 - 1213
  • [46] X-RAY K-EDGE ABSORPTION-SPECTRA OF FE MINERALS AND MODEL COMPOUNDS .2. EXAFS
    WAYCHUNAS, GA
    BROWN, GE
    APTED, MJ
    PHYSICS AND CHEMISTRY OF MINERALS, 1986, 13 (01) : 31 - 47
  • [47] Electronic and magnetic properties of iron hydride under pressure: An experimental and computational study using x-ray absorption spectroscopy and x-ray magnetic circular dichroism at the Fe K edge
    Bouldi, Nadejda
    Sainctavit, Philippe
    Juhin, Amelie
    Nataf, Lucie
    Baudelet, Francois
    PHYSICAL REVIEW B, 2018, 98 (06)
  • [48] Iron K-edge X-ray absorption near-edge structure spectroscopy of aerodynamically levitated silicate melts and glasses
    Alderman, O. L. G.
    Wilding, M. C.
    Tamalonis, A.
    Sendelbach, S.
    Heald, S. M.
    Benmore, C. J.
    Johnson, C. E.
    Johnson, J. A.
    Hah, H. -Y.
    Weber, J. K. R.
    CHEMICAL GEOLOGY, 2017, 453 : 169 - 185
  • [49] Theory of magnetic circular X-ray dichroism at the Fe K-edge in rare-earth iron garnets
    Harada, I
    Suzuki, T
    Kotani, A
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (09) : 3016 - 3020
  • [50] Fe K-Edge X-ray absorption Near-Edge spectroscopy and morphology analyses of LiFePO4 powders
    Nihlatunnur, N.
    Latif, C.
    Negara, V. S., I
    Wongtepa, W.
    Pratapa, S.
    MATERIALS TODAY-PROCEEDINGS, 2021, 44 : 3361 - 3364
12345