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|Type:||Artigo de periódico|
|Title:||Carrier Capture Time In T-shaped Semiconductor Quantum Wires|
|Abstract:||We investigate the capture time from quasi-two-dimensional (2D) electrons to quasi-one-dimensional (1D) electrons in T-shaped semiconductor quantum wires. Two processes are considered: longitudinal-optical-(LO)-phonon emission and quasi-elastic acoustical-phonon scattering. The quasi-1D ground state is a shallow bound state and is separated by less than one LO-phonon from the quasi-2D continuum. This enhances the LO-phonon emission process which largely dominates the capture process. The effects of the modulation of the density probability of the quasi-2D continuum lead only to a weak dependence of the capture time on the structure parameters. © 1998 Elsevier Science B.V. All rights reserved.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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