Time-reversal symmetry breaking and spontaneous currents ins-wave/normal-metal/d-wave superconductor sandwiches

Autor: Andrea Huck, Manfred Sigrist, Anne van Otterlo
Rok vydání: 1997
Předmět:
Zdroj: Physical Review B. 56:14163-14167
ISSN: 1095-3795
0163-1829
DOI: 10.1103/physrevb.56.14163
Popis: We study the physical properties of an $s$-wave--normal-metal--$d$-wave junction in terms of the Andreev bound-state solutions to the Bogoliubov--de Gennes equation in the normal-metal layer. The phase dependence of bound states with different orientations leads to superconducting states with broken time-reversal symmetry for generic orientations of the $d$-wave superconductor crystal. The occurrence of such a state and the associated spontaneous supercurrent along the junction and magnetic field is analyzed also in the framework of Ginzburg-Landau theory.
Databáze: OpenAIRE