Dynamical behavior of vortices introduced into a layered superconductor κ-(BEDT-TTF)2Cu(NCS)2

Shigeru Kasahara, Yutaka Nishio, Koji Kajita

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Vortices penetrating κ-(BEDT-TTF)2Cu(NCS)2 are interesting for its strongly two dimensional character. We investigated the behavior of vortices introduced by a dc-magnetic field through the shielding effect of the ac-magnetic field. For moderately strong ac-fields, we found an anomalous peak in the dc-field dependence of the shielding effect. The temperature dependence of the peak position is expressed as Hp = H0(Tc/T - 1). It turned out that the peak appears at the dc-field where the effective pinning potential on vortices has its maximum. We have confirmed this by estimating the pinning potential from the relaxation of the shielding, effect, which is caused by thermal creep of vortices and depends logarithmically on time.

Original languageEnglish
Pages (from-to)937-938
Number of pages2
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - Mar 15 2001
Externally publishedYes


  • Magnetic measurements
  • Organic superconductors

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry


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