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Type: Artigo de periódico
Title: Simultaneous Observation Of Stark-wannier And Franz-keldysh Regimes For Different Types Of Carriers In Inxga1-xas/gaas Superlattices
Author: Inoki C.K.
Ribeiro E.
Lemos V.
Cerdeira F.
Finnie P.
Roth A.P.
Abstract: We performed low-temperature (77 K) photomodulated transmission in two different Inx Ga1-xAs/GaAs superlattices with fixed built-in fields. Sample parameters are such that in one of them electrons are in the Stark-Wannier field regime while in the other they are in the Franz-Keldysh regime. In both samples, however, light holes are seen to be in the Franz-Keldysh regime. From this we infer that the light-hole valence bands are essentially lined up on both sides of the InxGa1-xAs/GaAs heterojunction. © 1994 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.49.2246
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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