Neutron scattering measurements of the phonon density of states of FeSe1-x superconductors

被引：59
作者：
Phelan, D. [1 ]
Millican, J. N. [1 ]
Thomas, E. L. [2 ]
Leao, J. B. [1 ]
Qiu, Y. [1 ,3 ]
Paul, R. [1 ]
机构：
[1] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA
[2] Natl Inst Stand & Technol, Div Ceram, Gaithersburg, MD 20899 USA
[3] Univ Maryland, Dept Mat Sci & Engn, College Pk, MD 20742 USA
来源：
PHYSICAL REVIEW B | 2009年 / 79卷 / 01期
基金：
美国国家科学基金会;
关键词：
iron compounds; neutron diffraction; phonons; superconducting transition temperature; RAY ACTIVATION-ANALYSIS; NIST;
D O I：
10.1103/PhysRevB.79.014519
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Inelastic neutron-scattering experiments have been carried out on polycrystalline samples of the FeSe1-x superconductors. We report the phonon density of states for FeSe1-x with T-c approximate to 8 K. The phonon cutoff frequency is observed around 40 meV. No significant change is observed across the superconducting transition. The measurements support the published first-principles calculations [A. Subedi , Phys. Rev. B 78, 134514 (2008)].
引用
收藏
页数：6
相关论文
共 23 条
  • [1] BAO W, ARXIV08092058
  • [2] Phonon Density of States of LaFeAsO1-xFx
    Christianson, A. D.
    Lumsden, M. D.
    Delaire, O.
    Stone, M. B.
    Abernathy, D. L.
    McGuire, M. A.
    Sefat, A. S.
    Jin, R.
    Sales, B. C.
    Mandrus, D.
    Mun, E. D.
    Canfield, P. C.
    Lin, J. Y. Y.
    Lucas, M.
    Kresch, M.
    Keith, J. B.
    Fultz, B.
    Goremychkin, E. A.
    McQueeney, R. J.
    [J]. PHYSICAL REVIEW LETTERS, 2008, 101 (15)
  • [3] Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
    Christianson, A. D.
    Goremychkin, E. A.
    Osborn, R.
    Rosenkranz, S.
    Lumsden, M. D.
    Malliakas, C. D.
    Todorov, I. S.
    Claus, H.
    Chung, D. Y.
    Kanatzidis, M. G.
    Bewley, R. I.
    Guidi, T.
    [J]. NATURE, 2008, 456 (7224) : 930 - 932
  • [4] Energy distributions of neutrons scattered from solid C-60 by the beryllium detector method
    Copley, JRD
    Neumann, DA
    Kamitakahara, WA
    [J]. CANADIAN JOURNAL OF PHYSICS, 1995, 73 (11-12) : 763 - 771
  • [5] The Disk Chopper Spectrometer at NIST: a new instrument for quasielastic neutron scattering studies
    Copley, JRD
    Cook, JC
    [J]. CHEMICAL PHYSICS, 2003, 292 (2-3) : 477 - 485
  • [6] Superconductivity close to magnetic instability in Fe(Se1-xTex)0.82
    Fang, M. H.
    Pham, H. M.
    Qian, B.
    Liu, T. J.
    Vehstedt, E. K.
    Liu, Y.
    Spinu, L.
    Mao, Z. Q.
    [J]. PHYSICAL REVIEW B, 2008, 78 (22):
  • [7] Superconductivity in the PbO-type structure α-FeSe
    Hsu, Fong-Chi
    Luo, Jiu-Yong
    Yeh, Kuo-Wei
    Chen, Ta-Kun
    Huang, Tzu-Wen
    Wu, Phillip M.
    Lee, Yong-Chi
    Huang, Yi-Lin
    Chu, Yan-Yi
    Yan, Der-Chung
    Wu, Maw-Kuen
    [J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (38) : 14262 - 14264
  • [8] Evidence for Unconventional Superconductivity in Arsenic-Free Iron-Based Superconductor FeSe: A 77Se-NMR Study
    Kotegawa, Hisashi
    Masaki, Satoru
    Awai, Yoshiki
    Tou, Hideki
    Mizuguchi, Yoshikazu
    Takano, Yoshihiko
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (11)
  • [9] Larson A. C., 2004, 86748 LAUR LOS AL NA
  • [10] Magnetism driven by anion vacancies in superconducting α-FeSe1-x
    Lee, K. -W.
    Pardo, V.
    Pickett, W. E.
    [J]. PHYSICAL REVIEW B, 2008, 78 (17)
123