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

✍ Scribed by Y. Asano; Y. Tanuma; Y. Tanaka; K. Kuroki; H. Tsuchiura; S. Kashiwaya

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 463 KB
• Volume: 412-414
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/j.physc.2003.12.032

✦ Synopsis

Josephson effect in junctions of quasi one-dimensional organic superconductors (TMTSF) 2 X 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 0 ) between second nearest lattice sites. For t 0 ¼ 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 0 , whereas the anomaly is suppressed in the f wave symmetry.