RT Journal Article
T1 Electronic-structure of Si delta-doped GaAs in an electric-field
A1 Domínguez-Adame Acosta, Francisco
A1 Méndez Martín, Bianchi
A1 Maciá Barber, Enrique Alfonso
AB The electron dynamics and the density of states of both single and periodic Si delta-doped GaAs subject to an applied electric field are studied theoretically. The space charge potential due to delta-doping is obtained by means of the semiclassical Thomas-Fermi model. Analysing the change in the density of states introduced by the delta-doping plus the electric field, we observe a set of sharp peaks, corresponding to field-induced localized states, and subsidiary peaks associated with more extended states. Furthermore, we use the inverse participation ratio to evaluate the spatial extent of electron wavefunctions. The number of sharp peaks equals the number of delta-doped layers. In the case of periodically delta-doped samples, the sharp peaks are equally spaced and give rise to Stark ladder resonances.
PB IOP Publishing LTD
SN 0268-1242
YR 1994
FD 1994-03
LK https://hdl.handle.net/20.500.14352/58979
UL https://hdl.handle.net/20.500.14352/58979
LA eng
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NO © 1994 IOP Publishing Ltd.The authors are indebted to A Sinchez for a critical reading of the manuscript.
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RD 18 jul 2024