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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Atomic frustration-based twistronics

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Autor(es):
Mizobata, W. N. [1] ; Sanches, J. E. [1] ; Penha, M. [1] ; Silva, W. C. [1] ; Carvalho, C. A. [1] ; Figueira, M. S. ; de Souza, M. [2, 3] ; Seridonio, A. C. [1, 3]
Número total de Autores: 8
Afiliação do(s) autor(es):
[1] Sao Paulo State Univ UNESP, Sch Engn, Dept Phys & Chem, BR-15385000 Ilha Solteira, SP - Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ - Brazil
[3] Sao Paulo State Univ Unesp, Dept Phys, IGCE, BR-13506970 Rio Claro, SP - Brazil
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: 2D MATERIALS; v. 8, n. 4 OCT 2021.
Citações Web of Science: 0
Resumo

We theoretically investigate atomic frustrated states in diatomic molecules hosted by the bilayer graphene setup twisted by the first magic angle and with broken inversion symmetry in the Dirac cones of the system mini Brillouin zones. Such states show local spectral features typically from uncoupled atoms, but counterintuitively, they also exhibit nonlocal molecular correlations, which turn them into atomically frustrated. By considering a particle-hole symmetric molecule in the Moire superlattice length-scale, we reveal distinctly from the metallic Weyl counterparts, a molecular zero mode atomically frustrated at the spectral densities of the dimer's atoms. To this end, a strong metallic phase with a plateau in the density of states established by the broken inversion symmetry, together with pronounced blue and red shifts in the molecular levels, due to the magic angle condition, should occur synergistically with atomic Coulomb correlations. Consequently, an entire collapse of these molecular peaks into a single one atomically frustrated, taking place exactly at the Fermi energy, becomes feasible just by tuning properly opposite gate voltages attached to the graphene monolayers. Therefore, we propose that unusual molecular bindings can be engineered via the twistronics of the bilayer graphene system, in particular, if its metallic phase is fully established. (AU)

Processo FAPESP: 18/09413-0 - Proposta de uma Transição de Fase Quântica em semimetais topológicos Dirac-Weyl 3D: armazenamento de qubits em termos de estados ligados no contínuo
Beneficiário:Antonio Carlos Ferreira Seridonio
Linha de fomento: Auxílio à Pesquisa - Regular