Superconducting states of reduced symmetry: General order parameters and physical implications
- 1 August 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 48 (5) , 3304-3308
- https://doi.org/10.1103/physrevb.48.3304
Abstract
It is shown that the order parameter in reduced-symmetry superconductors can be represented in terms of a complete set of basis-function multiplets, which is analogous to a complete set of crystal harmonics. These complete sets are found for several symmetries that are germane to the study of heavy-fermion superconductors. The implications of a general order parameter are discussed for several physical properties: line nodes in the energy gap, the Knight shift, surface pair-breaking, and time-reversal symmetry.Keywords
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