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.

引用

页数：6

共 42 条

[41] Strong shift of the irreversibility line in high-Tc superconductors upon vortex shaking with an oscillating magnetic field
Willemin, M
Rossel, C
Hofer, J
Keller, H
Erb, A
Walker, E
[J]. PHYSICAL REVIEW B, 1998, 58 (10): : R5940 - R5943
[42] Nodeless superconducting gap in AxFe2Se2 (A = K, Cs) revealed by angle-resolved photoemission spectroscopy
Zhang, Y.
Yang, L. X.
Xu, M.
Ye, Z. R.
Chen, F.
He, C.
Xu, H. C.
Jiang, J.
Xie, B. P.
Ying, J. J.
Wang, X. F.
Chen, X. H.
Hu, J. P.
Matsunami, M.
Kimura, S.
Feng, D. L.
[J]. NATURE MATERIALS, 2011, 10 (04) : 273 - 277

← 1 2 3 4 5 →