Tunneling and Orthogonality Catastrophe in the Topological Mechanism of Superconductivity
Abstract
We compute the angular dependence of the order parameter and tunneling amplitude in a model exhibiting topological superconductivity and sketch its derivation as a model of a doped Mott insulator. We show that ground states differing by an odd number of particles are orthogonal and the order parameter is in the d representation, although the gap in the electronic spectrum has no nodes. We also develop an operator algebra that allows one to compute off-diagonal correlation functions.
- Publication:
-
Physical Review Letters
- Pub Date:
- May 1997
- DOI:
- 10.1103/PhysRevLett.78.4103
- arXiv:
- arXiv:cond-mat/9701163
- Bibcode:
- 1997PhRvL..78.4103A
- Keywords:
-
- Condensed Matter - Superconductivity;
- Condensed Matter - Strongly Correlated Electrons;
- High Energy Physics - Theory
- E-Print:
- 4 pages, Revtex, psfig