Propriedades eletrônicas de fios quânticos de semicondutores anisotrópicos e dinâmica de pacotes de onda em monocamada de fósforo negro

• Ano de defesa: 2017
• Autor(a) principal: Cunha, Sofia Magalhães
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Fosforeno; Anisotropia; Fios quânticos anisotrópicos; Contínuo (teoria); Zitterbewegung
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/26692

In this work we discuss some electronic properties monolayer black phosphorous (phosphorene) within the tight-binding model and the continuum approximation. We did an analytical description of anisotropic quantum wires not aligned to the axis of anisotropy of the material and determined the energy spectrum of the system. Next, we analyze the dependence of the energy spectrum as a function of the rotation angle of the wire and its width. In relation to transport properties, we present the Split-operator technique and apply it to the case of phosphorene in order to describe the propagation of wave packet simulating the electronic transport in this structure. By analyzing the wave packet dynamics in phosphorene, we verified an effect analogous to the zitterbewegung in certain directions of propagation and different pseudospins.