Josephson effect in quasi one-dimensional superconductors (TMTSF) 2X

Y. Asano, Y. Tanuma, Y. Tanaka, K. Kuroki, H. Tsuchiura, S. Kashiwaya

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Josephson effect in junctions of quasi one-dimensional organic superconductors (TMTSF)2X is discussed. We assume the quarter-filling electron band and p, d and f wave like pairing symmetries in superconductors. To realize the electronic structures in real materials, we introduce the asymmetric hopping integral (t′) between second nearest lattice sites. For t′=0, the Josephson current in the d wave symmetry saturates in low temperatures, whereas those in p and f wave symmetries show the low-temperature anomaly due to the zero-energy state (ZES) at the junction interface. The low-temperature anomaly appears even in the d wave symmetry in the presence of t′, whereas the anomaly is suppressed in the f wave symmetry.

Original languageEnglish
Pages (from-to)212-216
Number of pages5
JournalPhysica C: Superconductivity and its applications
Volume412-414
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - 2004 Oct 1
Externally publishedYes

Keywords

  • Low-temperature anomaly
  • Quarter-filling
  • Zero-energy states

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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