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

Journal Article · Mon Dec 01 00:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.14163· OSTI ID:550527

Huck, A ^[1]; van Otterlo, A ^[2]; Sigrist, M ^[3]

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1. I. Institut fuer Theoretische Physik, Universitaet Hamburg, D-20355 Hamburg (Germany)
2. Physics Department, University of California, Davis, California 95616 (United States)
3. Theoretische Physik, ETH-Hoenggerberg, CH-8093 Zuerich (Switzerland)

We study the physical properties of an s-wave{endash}normal-metal{endash}d-wave junction in terms of the Andreev bound-state solutions to the Bogoliubov{endash}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. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550527
• Journal Information: Physical Review, B: Condensed Matter, Vol. 56, Issue 21; Other Information: PBD: Dec 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
SUPERCONDUCTING JUNCTIONS
GINZBURG-LANDAU THEORY
SYMMETRY BREAKING
BOUND STATE
D WAVES
ELECTRIC CURRENTS