Chiral $p$-wave superconductivity in twisted bilayer graphene from dynamical mean field theory

Pahlevanzadeh, B.; Sahebsara, P.; Sénéchal, David

doi:10.21468/SciPostPhys.11.1.017

SciPost Physics

Chiral $p$-wave superconductivity in twisted bilayer graphene from dynamical mean field theory

B. Pahlevanzadeh, P. Sahebsara, David Sénéchal

SciPost Phys. 11, 017 (2021) · published 21 July 2021

doi: 10.21468/SciPostPhys.11.1.017
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Abstract

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 (2018), which applies to the magic angle $1.30^\circ$. 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.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.11.1.017
TI  - Chiral $p$-wave superconductivity in twisted bilayer graphene from dynamical mean field theory
PY  - 2021/07/21
UR  - https://scipost.org/SciPostPhys.11.1.017
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 11
IS  - 1
SP  - 017
A1  - Pahlevanzadeh, B.
AU  - Sahebsara, P.
AU  - Sénéchal, David
AB  - 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 (2018), which applies to the magic angle $1.30^\circ$. 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.
ER  -

@Article{10.21468/SciPostPhys.11.1.017,
	title={{Chiral $p$-wave superconductivity in twisted bilayer graphene from dynamical mean field theory}},
	author={B. Pahlevanzadeh and P. Sahebsara and David Sénéchal},
	journal={SciPost Phys.},
	volume={11},
	pages={017},
	year={2021},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.11.1.017},
	url={https://scipost.org/10.21468/SciPostPhys.11.1.017},
}

Cited by 7

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¹ ² B. Pahlevanzadeh,
¹ P. Sahebsara,
² David Sénéchal

Funder for the research work leading to this publication

Conseil de Recherches en Sciences Naturelles et en Génie / Natural Sciences and Engineering Research Council [NSERC / CRSNG]