D.D. Awschalom, J. Warnock, et al.
Physical Review Letters
We have observed that a strong electric field E shifts to higher energies the photoluminescence and photocurrent peaks of a GaAs-Ga0.65Al0.35As superlattice of period D (=65), which we explain by a field-induced localization of carriers to isolated quantum wells. Good agreement is found between observed and calculated shifts when the large field-induced increase of the exciton binding energy is taken into account. At moderate fields [(2-3)×104 V/cm], the coupling between adjacent wells is manifested by four additional peaks that shift at the rates ± eED and ± 2eED and correspond to transitions that involve different levels of the Stark ladder. © 1988 The American Physical Society.
D.D. Awschalom, J. Warnock, et al.
Physical Review Letters
E. Mendez
Surface Science
J.A. Kash, E. Mendez, et al.
Applied Physics Letters
G. Bastard, E. Mendez, et al.
Physical Review B