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Zero-field superfluid density in a d-wave superconductor evaluated from muon-spin-rotation experiments in the vortex state


Khasanov, R; Kondo, T; Strässle, S; Heron, D O G; Kaminski, A; Keller, H; Lee, S L; Takeuchi, T (2009). Zero-field superfluid density in a d-wave superconductor evaluated from muon-spin-rotation experiments in the vortex state. Physical Review B, 79(18):180507.

Abstract

We present an approach that allows the reconstruction of the zero-field magnetic penetration depth λ0 based on the results of muon-spin-rotation (μSR) experiments conducted in a superconductor in the vortex state. It was successfully applied to describe the μSR experiments in optimally doped (BiPb)2(SrLa)2CuO6+δ (OP Bi2201). We found that in unconventional d-wave superconductors (such as OP Bi2201) only at relatively low magnetic fields [B/Bc2≲10−3; Bc2 is the upper critical field] the effective penetration depth λeff, obtained in μSR experiment, is a good measure of λ0. The high-field data need to be evaluated accounting for both the nonlinear and the nonlocal corrections.

Abstract

We present an approach that allows the reconstruction of the zero-field magnetic penetration depth λ0 based on the results of muon-spin-rotation (μSR) experiments conducted in a superconductor in the vortex state. It was successfully applied to describe the μSR experiments in optimally doped (BiPb)2(SrLa)2CuO6+δ (OP Bi2201). We found that in unconventional d-wave superconductors (such as OP Bi2201) only at relatively low magnetic fields [B/Bc2≲10−3; Bc2 is the upper critical field] the effective penetration depth λeff, obtained in μSR experiment, is a good measure of λ0. The high-field data need to be evaluated accounting for both the nonlinear and the nonlocal corrections.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2009
Deposited On:08 Jan 2010 11:05
Last Modified:06 Dec 2017 22:57
Publisher:American Physical Society
ISSN:1098-0121
Publisher DOI:https://doi.org/10.1103/PhysRevB.79.180507

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