Nonunitary Triplet Pairing in the Centrosymmetric Superconductor LaNiGa2

Hillier, Adrian D, Quintanilla, Jorge, Mazidian, Bayan, Annett, James F, Cywinski, Robert (2012) Nonunitary Triplet Pairing in the Centrosymmetric Superconductor LaNiGa2. Physical Review Letters: Moving Physics Forward, 109 (9). 0-0. ISSN 0031-9007. (doi:10.1103/PhysRevLett.109.097001)

Abstract

Muon spin rotation and relaxation experiments on the centrosymmetric intermetallic superconductor LaNiGa2 are reported. The appearance of spontaneous magnetic fields coincides with the onset of superconductivity, implying that the superconducting state breaks time reversal symmetry, similarly to noncentrosymmetric LaNiC2. Only four triplet states are compatible with this observation, all of which are nonunitary triplets. This suggests that LaNiGa2 is the centrosymmetric analogue of LaNiC2. We argue that these materials are representatives of a new family of paramagnetic nonunitary superconductors.

Item Type: Article
DOI/Identification number: 10.1103/PhysRevLett.109.097001
Additional information: Article number: 097001
Subjects: Q Science
Q Science > QC Physics
Q Science > QC Physics > QC174.12 Quantum theory
Divisions: Faculties > Sciences > School of Physical Sciences
Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Jorge Quintanilla
Date Deposited: 31 Aug 2012 13:05 UTC
Last Modified: 29 May 2019 09:15 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/30430 (The current URI for this page, for reference purposes)
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