Abstrakti
A fully self-consistent treatment for gap generation and Coulomb screening in excitonic insulators is presented. The method is based on the equations of motion for the relevant dynamical variables combined with a variational approach. Applying the theory for a model system of bilayer graphene, an excitonic ground state with a gap exceeding 10 meV is predicted.
Alkuperäiskieli | Englanti |
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Julkaisu | Physical review B: Condensed matter and materials physics |
Vuosikerta | 87 |
Numero | 24 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2013 |
OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |