Lockin transition, irreversibility field, and Josephson vortex penetration depth in κ-(ET)2Cu[N(CN)2]Br

R. W. Giannetta; N. H. Tea; F. A.B. Chaves; S. Rao; M. B. Salamon; A. M. Kini; H. H. Wang; U. Geiser; J. Schlueter; M. W. Trawick; J. C. Garland

doi:10.1016/S0921-4534(99)00382-2

Lockin transition, irreversibility field, and Josephson vortex penetration depth in κ-(ET)₂Cu[N(CN)₂]Br

R. W. Giannetta, N. H. Tea, F. A.B. Chaves, S. Rao, M. B. Salamon, A. M. Kini, H. H. Wang, U. Geiser, J. Schlueter, M. W. Trawick, J. C. Garland

Physics

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

Abstract

Penetration depth measurements in κ-(ET)₂Cu[N(CN)₂]Br are reported for fields H up to 1 T in magnitude and arbitrary orientation. For H nearly parallel to the conducting planes, the vortex penetration depth is nonmonotonic with field, indicating a lockin effect. Qualitatively similar behavior is observed in BSCCO. The data indicate a much stronger interaction between vortex kinks than predicted. In the field range over which vortex kinks are first formed, the response is hysteretic with an irreversibility field equal to the lower critical field. Both fields show positive curvature with temperature, suggesting relaxation over surface barriers. Josephson vortices exhibit single vortex pinning below 300 Oe. Between 300 and 1500 Oe, the Josephson vortex penetration depth changes dramatically, becoming proportional to both H and to the zero field interplane penetration depth, λ_⊥(T)-λ_⊥(0).

Original language	English (US)
Pages (from-to)	207-218
Number of pages	12
Journal	Physica C: Superconductivity and its applications
Volume	321
Issue number	3
DOIs	https://doi.org/10.1016/S0921-4534(99)00382-2
State	Published - Aug 20 1999

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/S0921-4534(99)00382-2

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Giannetta, R. W., Tea, N. H., Chaves, F. A. B., Rao, S., Salamon, M. B., Kini, A. M., Wang, H. H., Geiser, U., Schlueter, J., Trawick, M. W., & Garland, J. C. (1999). Lockin transition, irreversibility field, and Josephson vortex penetration depth in κ-(ET)₂Cu[N(CN)₂]Br. Physica C: Superconductivity and its applications, 321(3), 207-218. https://doi.org/10.1016/S0921-4534(99)00382-2

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title = "Lockin transition, irreversibility field, and Josephson vortex penetration depth in κ-(ET)2Cu[N(CN)2]Br",

abstract = "Penetration depth measurements in κ-(ET)2Cu[N(CN)2]Br are reported for fields H up to 1 T in magnitude and arbitrary orientation. For H nearly parallel to the conducting planes, the vortex penetration depth is nonmonotonic with field, indicating a lockin effect. Qualitatively similar behavior is observed in BSCCO. The data indicate a much stronger interaction between vortex kinks than predicted. In the field range over which vortex kinks are first formed, the response is hysteretic with an irreversibility field equal to the lower critical field. Both fields show positive curvature with temperature, suggesting relaxation over surface barriers. Josephson vortices exhibit single vortex pinning below 300 Oe. Between 300 and 1500 Oe, the Josephson vortex penetration depth changes dramatically, becoming proportional to both H and to the zero field interplane penetration depth, λ⊥(T)-λ⊥(0).",

author = "Giannetta, {R. W.} and Tea, {N. H.} and Chaves, {F. A.B.} and S. Rao and Salamon, {M. B.} and Kini, {A. M.} and Wang, {H. H.} and U. Geiser and J. Schlueter and Trawick, {M. W.} and Garland, {J. C.}",

note = "Funding Information: We wish to thank R. Prozorov, A. Carrington, N. Kopnin, B. Natterman and F. Nori for useful discussions. This work was supported by the National Science Foundation Grant No. NSF-DMR 89-20538 and through the Science and Technology Center for Superconductivity Grant No. NSF-DMR 91-20000. Work at Argonne National Laboratory is sponsored by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, under Contract W-31-109-ENG-38.",

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T1 - Lockin transition, irreversibility field, and Josephson vortex penetration depth in κ-(ET)2Cu[N(CN)2]Br

AU - Giannetta, R. W.

AU - Tea, N. H.

AU - Chaves, F. A.B.

AU - Rao, S.

AU - Salamon, M. B.

AU - Kini, A. M.

AU - Wang, H. H.

AU - Geiser, U.

AU - Schlueter, J.

AU - Trawick, M. W.

AU - Garland, J. C.

N1 - Funding Information: We wish to thank R. Prozorov, A. Carrington, N. Kopnin, B. Natterman and F. Nori for useful discussions. This work was supported by the National Science Foundation Grant No. NSF-DMR 89-20538 and through the Science and Technology Center for Superconductivity Grant No. NSF-DMR 91-20000. Work at Argonne National Laboratory is sponsored by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences, under Contract W-31-109-ENG-38.

PY - 1999/8/20

Y1 - 1999/8/20

N2 - Penetration depth measurements in κ-(ET)2Cu[N(CN)2]Br are reported for fields H up to 1 T in magnitude and arbitrary orientation. For H nearly parallel to the conducting planes, the vortex penetration depth is nonmonotonic with field, indicating a lockin effect. Qualitatively similar behavior is observed in BSCCO. The data indicate a much stronger interaction between vortex kinks than predicted. In the field range over which vortex kinks are first formed, the response is hysteretic with an irreversibility field equal to the lower critical field. Both fields show positive curvature with temperature, suggesting relaxation over surface barriers. Josephson vortices exhibit single vortex pinning below 300 Oe. Between 300 and 1500 Oe, the Josephson vortex penetration depth changes dramatically, becoming proportional to both H and to the zero field interplane penetration depth, λ⊥(T)-λ⊥(0).

AB - Penetration depth measurements in κ-(ET)2Cu[N(CN)2]Br are reported for fields H up to 1 T in magnitude and arbitrary orientation. For H nearly parallel to the conducting planes, the vortex penetration depth is nonmonotonic with field, indicating a lockin effect. Qualitatively similar behavior is observed in BSCCO. The data indicate a much stronger interaction between vortex kinks than predicted. In the field range over which vortex kinks are first formed, the response is hysteretic with an irreversibility field equal to the lower critical field. Both fields show positive curvature with temperature, suggesting relaxation over surface barriers. Josephson vortices exhibit single vortex pinning below 300 Oe. Between 300 and 1500 Oe, the Josephson vortex penetration depth changes dramatically, becoming proportional to both H and to the zero field interplane penetration depth, λ⊥(T)-λ⊥(0).

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