Chiral filtering in graphene with coupled valleys

Autor(es)

Lopes, P. L. e S. ^[1] ; Castro Neto, A. H. ^{[2, 3]} ; Caldeira, A. O. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP - Brazil

^[2] Natl Univ Singapore, Dept Phys, Singapore 117542 - Singapore

^[3] Natl Univ Singapore, Graphene Res Ctr, Singapore 117542 - Singapore

• Tipo de documento: Artigo Científico
• Fonte: Physical Review B; v. 84, n. 24 DEC 15 2011.
• Citações Web of Science: 4

Resumo

We analyze the problem of electronic transmission through different regions of a graphene sheet that are characterized by different types of connections between the Dirac points. These valley symmetry breaking Hamiltonians might arise from electronic self-interaction mediated by the dielectric environment of distinct parts of the substrate on which the graphene sheet is placed. We show that it is possible to have situations in which we can use these regions to select or filter states of one desired chirality. (AU)

• Processo FAPESP: 09/18336-0 - Partículas relativísticas e excitações similares em matéria condensada
• Beneficiário: Pedro Leopoldo e Silva Lopes
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto