Magnetic-field tuned anisotropy in superconducting RbxFe2-ySe2

被引：9
作者：
Bosma, S. [1 ]
Puzniak, R. [2 ]
Krzton-Maziopa, A. [3 ]
Bendele, M. [1 ,4 ]
Pomjakushina, E. [3 ]
Conder, K. [3 ]
Keller, H. [1 ]
Weyeneth, S. [1 ]
机构：
[1] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland
[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland
[3] Paul Scherrer Inst, Lab Developments & Methods, CH-5232 Villigen, Switzerland
[4] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland
来源：
PHYSICAL REVIEW B | 2012年 / 85卷 / 06期
基金：
瑞士国家科学基金会;
关键词：
SMFEASO0.8F0.2; TEMPERATURE; CS;
D O I：
10.1103/PhysRevB.85.064509
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The anisotropic superconducting properties of a RbxFe2-ySe2 single crystal with T-c similar or equal to 32 K were investigated by means of superconducting quantum interference device (SQUID) and torque magnetometry, probing the effective magnetic penetration depth lambda(eff) and the magnetic penetration depth anisotropy gamma(lambda). Interestingly, gamma(lambda) is found to be temperature independent in the superconducting state but strongly field dependent: gamma(lambda) (0.2 T) < 4 and gamma(lambda) (1.4 T) > 8. This unusual anisotropic behavior, together with a large zero-temperature lambda(eff)(0) similar or equal to 1.8 mu m, is possibly related to a superconducting state heavily biased by the coexisting antiferromagnetic phase.
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页数：6
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共 42 条
  • [1] Temperature and field dependence of the anisotropy of MgB2 -: art. no. 167004
    Angst, M
    Puzniak, R
    Wisniewski, A
    Jun, J
    Kazakov, SM
    Karpinski, J
    Roos, J
    Keller, H
    [J]. PHYSICAL REVIEW LETTERS, 2002, 88 (16) : 1670041 - 1670044
  • [2] Angst M., 2004, FOCUS SUPERCONDUCTIV, P1
  • [3] A Novel Large Moment Antiferromagnetic Order in K0.8Fe16Se2 Superconductor
    Bao Wei
    Huang Qing-Zhen
    Chen Gen-Fu
    Green, M. A.
    Wang Du-Ming
    He Jun-Bao
    Qiu Yi-Ming
    [J]. CHINESE PHYSICS LETTERS, 2011, 28 (08)
  • [4] Anisotropic superconducting properties of single-crystalline FeSe0.5Te0.5
    Bendele, M.
    Weyeneth, S.
    Puzniak, R.
    Maisuradze, A.
    Pomjakushina, E.
    Conder, K.
    Pomjakushin, V.
    Luetkens, H.
    Katrych, S.
    Wisniewski, A.
    Khasanov, R.
    Keller, H.
    [J]. PHYSICAL REVIEW B, 2010, 81 (22):
  • [5] Magnetic torque study of the temperature-dependent anisotropy parameter in overdoped superconducting single-crystal YBa2Cu3O7
    Bosma, S.
    Weyeneth, S.
    Puzniak, R.
    Erb, A.
    Schilling, A.
    Keller, H.
    [J]. PHYSICAL REVIEW B, 2011, 84 (02)
  • [6] Electronic Structure of KFe2Se2 from First-Principles Calculations
    Cao Chao
    Dai Jian-Hui
    [J]. CHINESE PHYSICS LETTERS, 2011, 28 (05)
  • [7] Guo J., ARXIV11010092CONDMAT
  • [8] Superconductivity in the iron selenide KxFe2Se2 (0 ≤x≤1.0)
    Guo, Jiangang
    Jin, Shifeng
    Wang, Gang
    Wang, Shunchong
    Zhu, Kaixing
    Zhou, Tingting
    He, Meng
    Chen, Xiaolong
    [J]. PHYSICAL REVIEW B, 2010, 82 (18):
  • [9] 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
  • [10] New ternary ThCr2Si2-type iron-selenide superconducting materials: Synthesis, properties and simulations
    Ivanovskii, A. L.
    [J]. PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2011, 471 (13-14): : 409 - 427
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