Diluted magnetic nanostructures in the presence of applied external fields / Estudo de nano estruturas diluídas magnéticas na presença de campos externos aplicados

AUTOR(ES)

Bruno de Pinho Alho

DATA DE PUBLICAÇÃO

2008

RESUMO

In the present work we studied properties of the spintronic transport of nanostructures formed by layers of diluted magnetic semiconductors (DMS) and conventional semiconductors with crossed fields applied. The electric field is in the growth direction and the magnetic field is perpendicular t o this one. We studied two configurations of nanostructures where the DMS is located in the barriers or in the well. We will show the possibility of the formation of a double quantum well like effective potential for different values of the applied fields intensities, barriers height and quantum well width. In this situation the system can be seen as a spintronic device called spin filter, since it can control the spin polarization in different regions of the nanostructure.

ASSUNTO(S)

fisica da materia condensada quantum well nanostructure nanoestrutura poço quântico diluted magnetic semiconductor spintrônica semicondutor diluído magnético spintronic

Documentos Relacionados

• Propriedades eletrônicas de heteroestruturas semicondutoras magnéticas diluídas.
• Estrutura eletrônica de heteroestruturas semicondutoras na presença de campos elétricos e magnéticos.
• Dinâmica de spins na presença de defeitos em estruturas magnéticas confinadas: aplicações a nanodiscos magnéticos
• Bent strips in external magnetic fields and with applied currents
• Campos potenciais modificados aplicados ao controle de múltiplos robôs