Mixed-parity superconductivity near Lifshitz transitions in strongly spin-orbit-coupled metals
classification
❄️ cond-mat.supr-con
cond-mat.str-el
keywords
lifshitzmetalmixed-parityspin-orbit-coupledstronglysuperconductivityanalysisclose
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We consider a strongly spin-orbit-coupled metal, one of whose Fermi surfaces is close to a Lifshitz (topological) transition. Via a renormalization group analysis of the square-lattice Hubbard model with strong Rashba spin-orbit coupling, we show that such a metal is generically unstable to the formation of mixed-parity superconductivity with a helical triplet component.
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