期刊
SCIPOST PHYSICS
卷 11, 期 1, 页码 -出版社
SCIPOST FOUNDATION
DOI: 10.21468/SciPostPhys.11.1.017
关键词
-
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN-2015-05598]
In the study of magic-angle twisted bilayer graphene, triplet superconductivity with p + ip symmetry and a subdominant singlet d + id state are stabilized by CDMFT. A minimum of the order parameter exists near quarter-filling and three-quarter filling, consistent with experimental observations.
We apply cluster dynamical mean field theory with an exact-diagonalization impurity solver to a Hubbard model for magic-angle twisted bilayer graphene, built on the tight-binding model proposed by Kang and Vafek [1], which applies to the magic angle 1.30 degrees. We find that triplet superconductivity with p + ip symmetry is stabilized by CDMFT, as well as a subdominant singlet d + id state. A minimum of the order parameter exists close to quarter-filling and three-quarter filling, as observed in experiments.
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