Quantum oscillations in the vortex liquid state of the organic superconductor κ - (BEDT-TTF)2Cu(NCS)2

T. Sasaki, T. Fukuda, N. Yoneyama, N. Kobayashi

Research output: Contribution to journalConference articlepeer-review

Abstract

We report the Shubnikov-de Haas (SdH) oscillations observed in the vortex liquid state of the organic superconductor κ-(BEDT-TTF) 2Cu(NCS)2. Below the upper critical field Hc2 of about 7 T, the additional damping of the SdH oscillation amplitude appears, as well as that of the de Haas-van Alphen (dHvA) oscillations. In the quantum fluctuation region at lower temperature. The oscillation amplitude of the SdH effect shows a stronger damping than that of the dHvA oscillations. The different magnetic field dependence of the additional damping of the oscillation amplitude may come from the effect of the transport current on the short-range order of vortices in the quantum vortex slush state which appears in the quantum vortex liquid region.

Original languageEnglish
Pages (from-to)354-358
Number of pages5
JournalPhysica B: Condensed Matter
Volume346-347
Issue number1-4
DOIs
Publication statusPublished - 2004 Apr 30
EventProceedings of the 7th International Symposium on Research - Toulouse, France
Duration: 2003 Jul 202003 Jul 23

Keywords

  • Organic superconductor
  • Shubnikov-de Haas oscillations
  • Vortex slush
  • κ-(BEDT-TTF)Cu(NCS)

ASJC Scopus subject areas

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

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