Anisotropic Josephson-vortex dynamics in layered organic superconductors

S. Yasuzuka; S. Uji; H. Satsukawa; M. Kimata; T. Terashima; H. Koga; Y. Yamamura; K. Saito; H. Akutsu; J. Yamada

doi:10.1016/j.physb.2009.11.017

Anisotropic Josephson-vortex dynamics in layered organic superconductors

S. Yasuzuka, S. Uji, H. Satsukawa, M. Kimata, T. Terashima, H. Koga, Y. Yamamura, K. Saito, H. Akutsu, J. Yamada

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

12 Citations (Scopus)

Abstract

To study the anisotropic Josephson-vortex dynamics in the d-wave superconductors, the interplane resistance has been measured on layered organic superconductors κ-(ET)₂Cu(NCS)₂ and β-(BDA-TTP)₂SbF₆ under magnetic fields precisely parallel to the conducting planes. For κ-(ET)₂Cu(NCS) ₂, in-plane angular dependence of the Josephson-vortex flow resistance is mainly described by the fourfold symmetry and dip structures appear when the magnetic field is applied parallel to the b- and c-axes. The obtained results have a relation to the d-wave superconducting gap symmetry. However, the absence of in-plane fourfold anisotropy was found for β-(BDA-TTP)₂SbF₆. The different anisotropic behavior is discussed in terms of the interlayer coupling strength.

Original language	English
Pages (from-to)	S288-S290
Journal	Physica B: Condensed Matter
Volume	405
Issue number	11 SUPPL.
DOIs	https://doi.org/10.1016/j.physb.2009.11.017
Publication status	Published - 2010 Jun 1
Externally published	Yes

Keywords

Anisotropic gap
Josephson-vortex
Organic conductor
Superconductivity

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2009.11.017

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title = "Anisotropic Josephson-vortex dynamics in layered organic superconductors",

abstract = "To study the anisotropic Josephson-vortex dynamics in the d-wave superconductors, the interplane resistance has been measured on layered organic superconductors κ-(ET)2Cu(NCS)2 and β-(BDA-TTP)2SbF6 under magnetic fields precisely parallel to the conducting planes. For κ-(ET)2Cu(NCS) 2, in-plane angular dependence of the Josephson-vortex flow resistance is mainly described by the fourfold symmetry and dip structures appear when the magnetic field is applied parallel to the b- and c-axes. The obtained results have a relation to the d-wave superconducting gap symmetry. However, the absence of in-plane fourfold anisotropy was found for β-(BDA-TTP)2SbF6. The different anisotropic behavior is discussed in terms of the interlayer coupling strength.",

keywords = "Anisotropic gap, Josephson-vortex, Organic conductor, Superconductivity",

author = "S. Yasuzuka and S. Uji and H. Satsukawa and M. Kimata and T. Terashima and H. Koga and Y. Yamamura and K. Saito and H. Akutsu and J. Yamada",

year = "2010",

month = jun,

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doi = "10.1016/j.physb.2009.11.017",

language = "English",

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journal = "Physica B: Condensed Matter",

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T1 - Anisotropic Josephson-vortex dynamics in layered organic superconductors

AU - Yasuzuka, S.

AU - Uji, S.

AU - Satsukawa, H.

AU - Kimata, M.

AU - Terashima, T.

AU - Koga, H.

AU - Yamamura, Y.

AU - Saito, K.

AU - Akutsu, H.

AU - Yamada, J.

PY - 2010/6/1

Y1 - 2010/6/1

N2 - To study the anisotropic Josephson-vortex dynamics in the d-wave superconductors, the interplane resistance has been measured on layered organic superconductors κ-(ET)2Cu(NCS)2 and β-(BDA-TTP)2SbF6 under magnetic fields precisely parallel to the conducting planes. For κ-(ET)2Cu(NCS) 2, in-plane angular dependence of the Josephson-vortex flow resistance is mainly described by the fourfold symmetry and dip structures appear when the magnetic field is applied parallel to the b- and c-axes. The obtained results have a relation to the d-wave superconducting gap symmetry. However, the absence of in-plane fourfold anisotropy was found for β-(BDA-TTP)2SbF6. The different anisotropic behavior is discussed in terms of the interlayer coupling strength.

AB - To study the anisotropic Josephson-vortex dynamics in the d-wave superconductors, the interplane resistance has been measured on layered organic superconductors κ-(ET)2Cu(NCS)2 and β-(BDA-TTP)2SbF6 under magnetic fields precisely parallel to the conducting planes. For κ-(ET)2Cu(NCS) 2, in-plane angular dependence of the Josephson-vortex flow resistance is mainly described by the fourfold symmetry and dip structures appear when the magnetic field is applied parallel to the b- and c-axes. The obtained results have a relation to the d-wave superconducting gap symmetry. However, the absence of in-plane fourfold anisotropy was found for β-(BDA-TTP)2SbF6. The different anisotropic behavior is discussed in terms of the interlayer coupling strength.

KW - Anisotropic gap

KW - Josephson-vortex

KW - Organic conductor

KW - Superconductivity

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DO - 10.1016/j.physb.2009.11.017

M3 - Article

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

IS - 11 SUPPL.

ER -

Anisotropic Josephson-vortex dynamics in layered organic superconductors

Abstract

Keywords

ASJC Scopus subject areas

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