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https://repositorio.ufba.br/handle/ri/6703
metadata.dc.type: | Artigo de Periódico |
Title: | Spin-dependent conductance in nonmagnetic InGaAs asymmetric double barrier devices |
Other Titles: | Brazilian Journal of Physics |
Authors: | Araújo, Carlos Moysés Silva, A. Ferreira da Persson, C. Ahuja, Rajeev Silva, E. A. de Andrada e |
metadata.dc.creator: | Araújo, Carlos Moysés Silva, A. Ferreira da Persson, C. Ahuja, Rajeev Silva, E. A. de Andrada e |
Abstract: | The spin dependence of the conductance of an asymmetric double-barrier InGaAs device is studied within the multiband k•p and envelope function approximations. The spin-dependent transmission probability for electrons across the structure is obtained using transfer matrices and the low bias conductance per unit area is calculated as a function of the Fermi energy (or doping) in the contacts. The possibility to obtain spin polarized currents in such devices is demonstrated, however, the resulting degree of polarization is rather small (a few percent) in the specific InGaAs structures considered here. |
Publisher: | Sociedade Brasileira de Física |
URI: | http://www.repositorio.ufba.br/ri/handle/ri/6703 |
Issue Date: | Jun-2004 |
Appears in Collections: | Artigo Publicado em Periódico (FIS) |
Files in This Item:
File | Description | Size | Format | |
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Araujo, C. Moyses.pdf | 101,15 kB | Adobe PDF | View/Open |
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