On edge states in superconductors with time inversion symmetry breaking
- 1 October 1997
- journal article
- Published by Pleiades Publishing Ltd in JETP Letters
- Vol. 66 (7) , 522-527
- https://doi.org/10.1134/1.567563
Abstract
Superconducting states with different internal topology are discussed for the layered high-Tc materials. If the time inversion symmetry is broken, the superconductivity is determined not only by the symmetry of the superconducting state but also by the topology of the ground state. The latter is determined by the integer-valued momentum-space topological invariant N. The current carrying boundary between domains with different N (N2≠N1) is considered. The current is produced by fermion zero modes, the number of which per layer is 2(N2−2N1).Keywords
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