TY - JOUR
T1 - Josephson effect in quasi one-dimensional superconductors (TMTSF) 2X
AU - Asano, Y.
AU - Tanuma, Y.
AU - Tanaka, Y.
AU - Kuroki, K.
AU - Tsuchiura, H.
AU - Kashiwaya, S.
PY - 2004/10
Y1 - 2004/10
N2 - 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.
AB - 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.
KW - Low-temperature anomaly
KW - Quarter-filling
KW - Zero-energy states
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U2 - 10.1016/j.physc.2003.12.032
DO - 10.1016/j.physc.2003.12.032
M3 - Article
AN - SCOPUS:4644269694
SN - 0921-4534
VL - 412-414
SP - 212
EP - 216
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
IS - SPEC. ISS.
ER -