Internal screening and dielectric engineering in magic-angle twisted bilayer graphene

  title={Internal screening and dielectric engineering in magic-angle twisted bilayer graphene},
  author={Jos{\'e} Mar{\'i}a Pizarro and Malte R{\"o}sner and Ronny Thomale and Roser Valent'i and Tim Oliver Wehling},
  journal={Physical Review B},
Magic-angle twisted bilayer graphene (MA-tBLG) hosts intricate quantum many-body states. A critical contributor to these states are electron-electron interactions. What is the profile of the effective Coulomb interaction in MA-tBLG? And what determines this profile? Are intrinsic screening processes of MA-tBLG dominant or is the effective interaction mostly controlled by screening processes taking place in the surrounding dielectrics? Here, the authors show that the influence of the dielectric… 

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