Abstract
It is demonstrated that the electron spectrum in ideal two-dimensional and three-dimensional quantum-dot superlattices (SLs) under a constant electric field can be either discrete or continuous depending on the field orientation with respect to the SL crystallographic axes. In the latter case, the width of the resulting transverse miniband depends exponentially on the crystallographic index corresponding to the direction of the field. The electron localization area undergoes dramatic variations with the field orientation in the vicinity of the directions corresponding to the continuous energy spectrum. The Bloch oscillations in this kind of SL are considered. It is established that the scattering of oscillating electrons can be strongly suppressed by an appropriate choice of the field strength and direction.
Similar content being viewed by others
References
R. Notzel, Semicond. Sci. Technol. 11, 1359 (1996).
L. V. Keldysh, Fiz. Tverd. Tela (Leningrad) 4, 2265 (1962) [Sov. Phys. Solid State 4, 1658 (1962)].
R. F. Kazarinov and R. A. Suris, Fiz. Tekh. Poluprovodn. (Leningrad) 6, 148 (1972) [Sov. Phys. Semicond. 6, 120 (1972)].
R. A. Suris, NATO Adv. Study Inst. Ser., Ser. E 323, 197 (1996).
G. H. Wannier, Phys. Rev. 52, 191 (1937).
A. P. Dmitriev, Zh. Éksp. Teor. Fiz. 95, 234 (1989) [Sov. Phys. JETP 68, 132 (1989)].
F. Bloch, Z. Phys. 52, 555 (1928).
K. Leo, Semicond. Sci. Technol. 13, 249 (1998).
F. Rossi, Semicond. Sci. Technol. 13, 147 (1998).
Author information
Authors and Affiliations
Additional information
__________
Translated from Fizika i Tekhnika Poluprovodnikov, Vol. 35, No. 2, 2001, pp. 219–226.
Original Russian Text Copyright © 2001 by Dmitriev, Suris.
Rights and permissions
About this article
Cite this article
Dmitriev, I.A., Suris, R.A. Electron localization and bloch oscillations in quantum-dot superlattices under a constant electric field. Semiconductors 35, 212–219 (2001). https://doi.org/10.1134/1.1349935
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1134/1.1349935