Anomalous Josephson effect in p-wave dirty junctions.
The Josephson effect in p-wave superconductor/diffusive normal metal/p-wave superconductor junctions is studied theoretically. Amplitudes of Josephson currents are several orders of magnitude larger than those in s-wave junctions. Current-phase (J-phi) relations in low temperatures are close to those in ballistic junctions such as J proportional to sin(phi/2) and J proportional to phi even in the presence of random impurity potentials. A cooperative effect between the midgap Andreev resonant states and the proximity effect causes such anomalous properties and is a character of the spin-triplet superconductor junctions.
Asano
Yasuhiro
Y
Department of Applied Physics, Hokkaido University, Sapporo 060-8628, Japan.
Tanaka
Yukio
Y
Kashiwaya
Satoshi
S