Magnetic penetration depth in RbOs2O6 studied by muon spin rotation -: art. no. 104504

被引：41

作者：

Khasanov, R ^{[1
]}

Eshchenko, DG

Di Castro, D

Shengelaya, A

La Mattina, F

Maisuradze, A

Baines, C

Luetkens, H

Karpinski, J

Kazakov, SM

Keller, H

机构：

[1] Swiss Fed Inst Technol, Lab Neutron Scattering, CH-5232 Villigen, Switzerland

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] Univ Geneva, DPMC, CH-1211 Geneva, Switzerland

[4] Univ Zurich, Phys Inst, CH-8057 Zurich, Switzerland

[5] PSI, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland

[6] Univ Roma La Sapienza, Coherentia INFM, Rome, Italy

[7] Univ Roma La Sapienza, Dept Phys, Rome, Italy

[8] ETH, Solid State Phys Lab, Zurich, Switzerland

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.72.104504

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Measurements of the magnetic field penetration depth lambda in the pyrochlore superconductor RbOs2O6(T-c similar or equal to 6.3 K) were carried out by means of the muon-spin-rotation (mu SR) technique. At low temperatures lambda(-2)(T) saturates and becomes constant below T similar or equal to 0.2T(c), in agreement with what is expected for weak-coupled s-wave BCS superconductors. The value of lambda at T=0 was found to be in the range of 250-300 nm. mu SR and equilibrium magnetization measurements both reveal that at low temperatures lambda is almost (at the level of 10%) independent of the applied magnetic field. This result suggests that the superconducting energy gap in RbOs2O6 is isotropic.

引用

页数：7

共 48 条

[1] Anisotropy and internal-field distribution of MgB2 in the mixed state at low temperatures -: art. no. 224513 [J].

Angst, M ;

Di Castro, D ;

Eshchenko, DG ;

Khasanov, R ;

Kohout, S ;

Savic, IM ;

Shengelaya, A ;

Bud'ko, SL ;

Canfield, PC ;

Jun, J ;

Karpinski, J ;

Kazakov, SM ;

Ribeiro, RA ;

Keller, H .

PHYSICAL REVIEW B, 2004, 70 (22) :224513-1

[2] FLUX DISTRIBUTION AND PENETRATION DEPTH MEASURED BY MUON SPIN ROTATION IN HIGH-TC SUPERCONDUCTORS [J].

BRANDT, EH .

PHYSICAL REVIEW B, 1988, 37 (04) :2349-2352

[3]

Brewer J.H., 1994, ENCY APPL PHYS, V11, P23, DOI 10.1002/3527600434.eap258

[4] Intrinsic thermodynamic properties of the pyrochlore superconductor RbOs2O6 extracted by condensation energy analysis -: art. no. 214517 [J].

Brühwiler, M ;

Kazakov, SM ;

Karpinski, J ;

Batlogg, B .

PHYSICAL REVIEW B, 2005, 71 (21)

[5] Superconductivity in the geometrically frustrated pyrochlore RbOs2O6 -: art. no. 020503 [J].

Brühwiler, M ;

Kazakov, SM ;

Zhigadlo, ND ;

Karpinski, J ;

Batlogg, B .

PHYSICAL REVIEW B, 2004, 70 (02) :020503-1

[6] IMPLANTED MUON STUDIES IN CONDENSED MATTER SCIENCE [J].

COX, SFJ .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (22) :3187-3319

[7]

GREBINNIK VG, 1993, PHYS ATOM NUCL+, V56, P443

[8] Superconductivity at 1 K in Cd2Re2O7 -: art. no. 187001 [J].

Hanawa, M ;

Muraoka, Y ;

Tayama, T ;

Sakakibara, T ;

Yamaura, J ;

Hiroi, Z .

PHYSICAL REVIEW LETTERS, 2001, 87 (18) :187001-1

[9] PRECISION-MEASUREMENTS OF THE TEMPERATURE-DEPENDENCE OF LAMBDA IN YBA2CU3O6.95 - STRONG EVIDENCE FOR NODES IN THE GAP FUNCTION [J].

HARDY, WN ;

BONN, DA ;

MORGAN, DC ;

LIANG, RX ;

ZHANG, K .

PHYSICAL REVIEW LETTERS, 1993, 70 (25) :3999-4002

[10] Specific heat of the β-pyrochlore oxide superconductors CsOs2O6 and RbOs2O6 [J].

Hiroi, Z ;

Yonezawa, S ;

Muramatsu, T ;

Yamaura, J ;

Muraoka, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74 (04) :1255-1262

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