Nanofitas de nitreto de boro dopadas sob efeitos de um campo magnético uniforme

• Autor(a) principal: Sousa, Duarte José Pereira de
• Data de Publicação: 2013
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
• Texto Completo: http://www.repositorio.ufc.br/handle/riufc/31859
• topic: Nanofitas; Nitreto de boro hexagonal; Campo magnético uniforme; Modelo tight-binding

A theoretical study of electronic properties of doped hexagonal boron nitride nanoribbons under the effect of an external magnetic field was performed. The ribbons are made of lines of boron and nitrogen atoms in an armchair or zigzag configurations and the impurities are included in the ribbon substitutionally. The Peierls approximation is used to incorporate the magnetic field within a tight-binding picture. It was showed that the aplication of the external field along with the addition of one or two lines of carbon atoms as impurities can change drastically the energy spectrum deppending on their localization and the spacing between them, suggesting a possible mechanism for controlling the gap of such nanomaterials.