Journal
PHYSICAL REVIEW RESEARCH
Volume 5, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevResearch.5.L012034
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Evidence of correlated insulating and superconducting phases in tWSe2 was reported. A functional renormalization group approach was used to investigate their origin and interplay. The phase diagram as a function of filling and perpendicular electric field was mapped, revealing mixed-parity superconducting order parameters with s/f-wave and topological d/p-wave symmetry.
Evidence for correlated insulating and superconducting phases around regions of high density of states was reported in the strongly spin-orbit coupled van der Waals material twisted tungsten diselenide (tWSe2). We investigate their origin and interplay by using a functional renormalization group approach that allows one to describe superconducting and spin/charge instabilities in an unbiased way. We map out the phase diagram as a function of filling and perpendicular electric field, and find that the moire Hubbard model for tWSe2 features mixed-parity superconducting order parameters with s/ f -wave and topological d/p-wave symmetry next to (incommensurate) density-wave states. Our work systematically characterizes competing interaction-driven phases in tWSe2 beyond mean-field approximations and provides guidance for experimental measurements by outlining the fingerprint of correlated states in interacting susceptibilities.
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