Magneto-éxcitons em super-redes semicondutoras de InGaAs/InAlAs

• Ano de defesa: 2004
• Autor(a) principal: Marcelo Valadares de Magalhaes Pereira
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Minas Gerais; UFMG
• Palavras-chave em Português: InGaAs; Super-redes; Física
• Link de acesso: http://hdl.handle.net/1843/ESCZ-692H8X

In this work we study a sample with two undoped In0,53Ga0,47As/In0,52Al0,48As superlattices grown in sequence on top of each other, on the same InP substrate. We performed magnetophotoluminescence measurements with magnetic fields up to 12 T for different temperatures from 4 K to 45 K. We obtain the exciton binding energy and the effective reduced mass for this structure and their variation with the temperature and the magnetic field.