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arXiv · 1612.02365

Quantum phases of interacting three-component fermions under the influence of spin-orbit coupling and Zeeman fields

Doga Murat Kurkcuoglu·C. A. R. Sa de Melo
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Abstract

We describe the quantum phases of interacting three component fermions in the presence of spin-orbit coupling, as well as linear and quadratic Zeeman fields. We classify the emerging superfluid phases in terms of the loci of zeros of their quasi-particle excitation spectrum in momentum space, and we identify several Lifshitz-type topological transitions. In the particular case of vanishing quadratic Zeeman field, a quintuple point exists where four gapless superfluid phases with surface and line nodes converge into a fully gapped superfluid phase. Lastly, we also show that the simultaneous presence of spin-orbit and Zeeman fields transforms a momentum-independent scalar order parameter into an explicitly momentum-dependent tensor in the generalized helicity basis.

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Doga Murat Kurkcuoglu, C. A. R. Sa de Melo. 2016-12-07. Quantum phases of interacting three-component fermions under the influence of spin-orbit coupling and Zeeman fields. https://arxiv.org/abs/1612.02365

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