Model Evidence of an Anisotropic Chiral-Wave Pairing State for the Water-IntercalatedSuperconductor
- 26 August 2013
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 111 (9), 097001
- https://doi.org/10.1103/physrevlett.111.097001
Abstract
Since its discovery, the superconducting phase in water-intercalated sodium cobaltates NaxCoO2 yH2O (x~0.3, y~1.3) has posed fundamental challenges in terms of experimental investigation and theoretical understanding. By a combined dynamical mean-field and renormalization group approach, we find an anisotropic chiral d+id wave state as a consequence of multi-orbital effects, Fermi surface topology, and magnetic fluctuations. It naturally explains the singlet property and close-to-nodal gap features of the superconducting phase as indicated by experiments.Comment: 4 pages plus references, 5 figureKeywords
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