TY - JOUR
T1 - Nonmonotonic temperature dependence of critical current in diffusive d-wave junctions
AU - Yokoyama, T.
AU - Tanaka, Y.
AU - Golubov, Alexandre Avraamovitch
AU - Asano, Y.
PY - 2006
Y1 - 2006
N2 - We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.
AB - We study the Josephson effect in D/I/DN/I/D junctions, where I, DN, and D denote an insulator, a diffusive normal metal, and a d-wave superconductor, respectively. The Josephson current is calculated based on the quasiclassical Green's function theory with a general boundary condition for unconventional superconducting junctions. In contrast to s-wave junctions, the product of the Josephson current and the normal-state resistance is enhanced by making the interface barriers stronger. The Josephson current has a nonmonotonic temperature dependence due to the competition between the proximity effect and the midgap Andreev resonant states.
KW - METIS-233430
KW - IR-59093
U2 - 10.1103/PhysRevB.73.140504
DO - 10.1103/PhysRevB.73.140504
M3 - Article
VL - 73
SP - 14050R-
JO - Physical review B: Condensed matter and materials physics
JF - Physical review B: Condensed matter and materials physics
SN - 1098-0121
IS - 14
ER -