Unconventional superconductivity in (TMTSF)2ClO4

G. M. Luke; M. T. Rovers; A. Fukaya; I. M. Gat; M. I. Larkin; A. Savici; Y. J. Uemura; K. M. Kojima; P. M. Chaikin; I. J. Lee; M. J. Naughton

doi:10.1016/S0921-4526(02)01634-4

Unconventional superconductivity in (TMTSF)₂ClO₄

G. M. Luke, M. T. Rovers, A. Fukaya, I. M. Gat, M. I. Larkin, A. Savici, Y. J. Uemura, K. M. Kojima, P. M. Chaikin, I. J. Lee, M. J. Naughton

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

We have performed detailed measurements to characterize the superconducting (T_c ≈ 1.1 K) state of (TMTSF)₂ClO₄ using both normal and deuterated samples. Using ZF-μSR measurements to search for spontaneous magnetic fields below T_c, we see no evidence for such fields within our resolution, thus we conclude the time reversal symmetry is likely not broken. We have also performed precession measurements in the vortex state of (TMTSF)₂ClO₄. The superconducting relaxation rate decreases strongly with increasing field, which may indicate a dimensional crossover in the nature of the vortex lattice. We estimate that the penetration depth is roughly 535 nm.

Original language	English
Pages (from-to)	378-380
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	326
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(02)01634-4
State	Published - Feb 2003
Externally published	Yes

Funding

Research at McMaster was supported by NSERC and the Canadian Institute for Advanced Research, and at Columbia by NSF (DMR-01-02752, 98-02000).

Funders	Funder number
National Science Foundation	98-02000, DMR-01-02752
Canadian Institute for Advanced Research
Natural Sciences and Engineering Research Council of Canada

Keywords

Broken time reversal symmetry
Organic superconductors
Penetration depth

Access to Document

10.1016/S0921-4526(02)01634-4

Cite this

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title = "Unconventional superconductivity in (TMTSF)2ClO4",

abstract = "We have performed detailed measurements to characterize the superconducting (Tc ≈ 1.1 K) state of (TMTSF)2ClO4 using both normal and deuterated samples. Using ZF-μSR measurements to search for spontaneous magnetic fields below Tc, we see no evidence for such fields within our resolution, thus we conclude the time reversal symmetry is likely not broken. We have also performed precession measurements in the vortex state of (TMTSF)2ClO4. The superconducting relaxation rate decreases strongly with increasing field, which may indicate a dimensional crossover in the nature of the vortex lattice. We estimate that the penetration depth is roughly 535 nm.",

keywords = "Broken time reversal symmetry, Organic superconductors, Penetration depth",

author = "Luke, {G. M.} and Rovers, {M. T.} and A. Fukaya and Gat, {I. M.} and Larkin, {M. I.} and A. Savici and Uemura, {Y. J.} and Kojima, {K. M.} and Chaikin, {P. M.} and Lee, {I. J.} and Naughton, {M. J.}",

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T1 - Unconventional superconductivity in (TMTSF)2ClO4

AU - Luke, G. M.

AU - Rovers, M. T.

AU - Fukaya, A.

AU - Gat, I. M.

AU - Larkin, M. I.

AU - Savici, A.

AU - Uemura, Y. J.

AU - Kojima, K. M.

AU - Chaikin, P. M.

AU - Lee, I. J.

AU - Naughton, M. J.

PY - 2003/2

Y1 - 2003/2

N2 - We have performed detailed measurements to characterize the superconducting (Tc ≈ 1.1 K) state of (TMTSF)2ClO4 using both normal and deuterated samples. Using ZF-μSR measurements to search for spontaneous magnetic fields below Tc, we see no evidence for such fields within our resolution, thus we conclude the time reversal symmetry is likely not broken. We have also performed precession measurements in the vortex state of (TMTSF)2ClO4. The superconducting relaxation rate decreases strongly with increasing field, which may indicate a dimensional crossover in the nature of the vortex lattice. We estimate that the penetration depth is roughly 535 nm.

AB - We have performed detailed measurements to characterize the superconducting (Tc ≈ 1.1 K) state of (TMTSF)2ClO4 using both normal and deuterated samples. Using ZF-μSR measurements to search for spontaneous magnetic fields below Tc, we see no evidence for such fields within our resolution, thus we conclude the time reversal symmetry is likely not broken. We have also performed precession measurements in the vortex state of (TMTSF)2ClO4. The superconducting relaxation rate decreases strongly with increasing field, which may indicate a dimensional crossover in the nature of the vortex lattice. We estimate that the penetration depth is roughly 535 nm.

KW - Broken time reversal symmetry

KW - Organic superconductors

KW - Penetration depth

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