Propriedades de transporte em barreiras magnéticas em grafeno

Detalhes bibliográficos
Ano de defesa: 2015
Autor(a) principal: Nunes, Edvam de Oliveira
Orientador(a): Bittencourt, Antonio Carlos Rodrigues lattes
Banca de defesa: Não Informado pela instituição
Tipo de documento: Tese
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de São Carlos
Câmpus São Carlos
Programa de Pós-Graduação: Programa de Pós-Graduação em Física - PPGF
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Área do conhecimento CNPq:
Link de acesso: https://repositorio.ufscar.br/handle/20.500.14289/7606
Resumo: In this work we studied the properties of Graphene through single and double magnetic barrier. It was used the transfer matrix method for calculating the transmissivity in single and double barriers of monolayer Graphene with magnetic barriers. The transmission was calculated as a function of electron energy for the following conditions: with constant energy, keeping the magnetic fields and varying distances and width of the barriers of the well. For the transmissivity each as function of incidence angle 0, the same procedure was adopted. Situations where the potential V is zero and nonzero were analyzed. Subsequently, we performed calculations of transmissivity for different potentials of zero. The conductance was also calculated as a function of energy, and magnetic field as a function of distance. These calculations were compared using barriers to equal and different magnetic fields. Thus, the transmission probability and the conductance could be modulated by the structural change of the barrier parameters, such as width and height, providing the ability to control electron beams in graphene.