Effect of Spatially Correlated Disorder on Electronic Transport Properties of Aperiodic Superlattices (GaAs/AlxGa1-xAs)

Authors: F. Bendahma, S. Bentata, S. Cherid, A. Zitouni, S. Terkhi, T. Lantri, Y. Sefir, Z. F. Meghoufel

Abstract:

We examine the electronic transport properties in Al_xGa_1-xAs/GaAs superlattices. Using the transfer-matrix technique and the exact Airy function formalism, we investigate theoretically the effect of structural parameters on the electronic energy spectra of trimer thickness barrier (TTB). Our numerical calculations showed that the localization length of the states becomes more extended when the disorder is correlated (trimer case). We have also found that the resonant tunneling time (RTT) is of the order of several femtoseconds.

Keywords: Electronic transport properties, structural parameters, superlattice, transfer-matrix technique.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1339566

References:

[1] R. Tsu, L. Esaki, Appl. Phys. Lett. 22 (1973) 562.
[2] L. L. Chang, L. Esaki, R. Tsu, Appl. Phys. Lett. 24 (1974) 593.
[3] J. R. Arthur, Molecular beam epitaxy, Surface Science 500 (2002) 189-217.
[4] M. Kriechbaum, P. Kocevar, H. Pascher, G. Bauer, IEEE J. Quantum Electron. 24 (1988) 1727.
[5] B. Romeira, J. Javaloyes, J. M. L. Figueiredo, C. N. Ironside, H. I. Cantú, A.E. Kelly, IEEE J. Quantum Electron. 49 (2013) 31.
[6] F. M. Izrailev, A. A. Krokhin, N.M. Makarov, Physics Reports, 512, (2012) 125-254.
[7] Luryi, App. Phys. Lett. 47, 490 (1985).
[8] T. B. Bahder, C. A. Morrison, and J. D. Bruno, App. Phys. Lett. 51, 1089 (1987).
[9] Zou, J. Rammer, and K. A. Chao, Phys. Rev. B 24, 15 912 (1992).
[10] Landauer and T. Martin, Rev. Mod. Phys. 66, 217 (1994).
[11] S. S. Allen, S. L. Richardson, Phys. Rev. B: Condens. Matter 50 (1994) 11693.
[12] I. Gomez, F. Dominguez Adame, E. Diez, Phys. Rev.B: Condens.Matter 324 (2002) 238.