Time-reversal-symmetry-broken state in the BCS formalism for a multi-band superconductor.
J Phys Condens Matter
; 25(42): 425702, 2013 Oct 23.
Article
in En
| MEDLINE
| ID: mdl-24067510
ABSTRACT
In three-band BCS superconductors with repulsive inter-band interactions, frustration between the bands can lead to an inherently complex gap function, arising out of a phase difference between the bands in the range 0 and π. Since the complex conjugate of this state is also a solution, the ground state is degenerate, and there appears a time-reversal-symmetry-broken state. In this paper we investigate the existence of this state as a function of inter-band coupling strength and show how a new phase transition appears between the TRSB and conventional BCS states.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
J Phys Condens Matter
Journal subject:
BIOFISICA
Year:
2013
Document type:
Article
Affiliation country:
Australia