Quintanilla, J. and Hillier, A.D. and Annett, J.F. and Cywinski, R. (2010) Relativistic analysis of the pairing symmetry of the noncentrosymmetric superconductor LaNiC2. Physical Review B, 82 (17). p. 174511. ISSN 1098-0121.
| PDF (Research article (as published by Phys. Rev. B)) | ||
|
Download (149Kb)
|
![[img]](http://kar.kent.ac.uk/style/images/fileicons/application_pdf.png)
|
|
| Official URL http://dx.doi.org/10.1103/PhysRevB.82.174511 |
||
Abstract
We present a relativistic symmetry analysis of the allowed pairing states in the noncentroymmetric superconductor LaNiC2. The case of zero spin-orbit coupling (SOC) is discussed first and then the evolution of the symmetry-allowed superconducting instabilities as SOC is adiabatically turned on is described. In addition to mixing singlet with triplet pairing, SOC splits some triplet pairing states with degenerate order-parameter spaces into nondegenerate pairing states with different critical temperatures. We address the breaking of time-reversal symmetry detected in recent muon spin-relaxation experiments and show that it is only compatible with such nonunitary triplet pairing states. In particular, an alternative scenario featuring conventional singlet pairing with a small admixture of triplet pairing is shown to be incompatible with the experimental data.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science Q Science > QC Physics |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Physical Sciences > Functional Materials Group Faculties > Science Technology and Medical Studies > School of Physical Sciences |
| Depositing User: | J. Quintanilla-Tizon |
| Date Deposited: | 17 Nov 2010 11:37 |
| Last Modified: | 25 Jun 2012 10:26 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/26055 (The current URI for this page, for reference purposes) |
- Depositors only (login required):
