Topological metals and finite-momentum superconductors.

Proc Natl Acad Sci U S A

Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139

Published: January 2021

AI Article Synopsis

  • The study explores how a Zeeman field (a magnetic field) can trigger a change in the topological properties of two-dimensional metals that have spin-orbit coupling.
  • It also reveals that this field can cause a first-order phase transition in superconductors, which involves a sudden shift in the momentum of Cooper pairs.
  • Different strengths of spin-orbit coupling result in various phase diagrams for these two-dimensional superconductors when subjected to an in-plane magnetic field.

Article Abstract

We show that the Zeeman field can induce a topological transition in two-dimensional spin-orbit-coupled metals and, concomitantly, a first-order phase transition in the superconducting state involving a discontinuous change of Cooper pair momentum. Depending on the spin-orbit coupling strength, we find different phase diagrams of two-dimensional (2D) superconductors under in-plane magnetic field.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7826329PMC
http://dx.doi.org/10.1073/pnas.2019063118DOI Listing

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