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Title: Resonant tunneling of electrons between two-dimensional systems of different densities in a quantizing magnetic field

Abstract

The results of experimental investigation of the vertical electron transport in a GaAs/Al{sub 0.3}Ga{sub 0.7}As/GaAs single-barrier tunneling heterostructure with a doped barrier are presented. Two-dimensional accumulation layers appear on different sides of the barrier as a result of the ionization of Si donors in the barrier layer. The nonmonotonic shift of the current peak is found in the I-V curve of the tunneling diode in a magnetic field perpendicular to the planes of two-dimensional layers. Such a behavior is shown to be successfully explained in the model of appearing the Coulomb pseudogap and the pinning of the spin-split Landau levels at the Fermi levels of the contacts. In this explanation, it is necessary to assume that the Lande factor is independent of the filling factors of the Landau levels and is g* = 7.5 for both layers.

Authors:
;  [1];  [2]
  1. Russian Academy of Sciences, Institute of Microelectronics Technology (Russian Federation)
  2. Institut National des Sciences Appliquees (France)
Publication Date:
OSTI Identifier:
21067699
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 102; Journal Issue: 4; Other Information: DOI: 10.1134/S1063776106040182; Copyright (c) 2006 Nauka/Interperiodica; Article Copyright (c) 2006 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM ARSENIDES; DOPED MATERIALS; ELECTRONS; FERMI LEVEL; GALLIUM ARSENIDES; IONIZATION; LANDE FACTOR; LAYERS; MAGNETIC FIELDS; SPIN; TUNNEL DIODES; TUNNEL EFFECT; TWO-DIMENSIONAL CALCULATIONS

Citation Formats

Popov, V. G., E-mail: popov@ipmt-hpm.ac.ru, Dubrovskii, Yu. V., and Portal, J.-C.. Resonant tunneling of electrons between two-dimensional systems of different densities in a quantizing magnetic field. United States: N. p., 2006. Web. doi:10.1134/S1063776106040182.
Popov, V. G., E-mail: popov@ipmt-hpm.ac.ru, Dubrovskii, Yu. V., & Portal, J.-C.. Resonant tunneling of electrons between two-dimensional systems of different densities in a quantizing magnetic field. United States. doi:10.1134/S1063776106040182.
Popov, V. G., E-mail: popov@ipmt-hpm.ac.ru, Dubrovskii, Yu. V., and Portal, J.-C.. Sat . "Resonant tunneling of electrons between two-dimensional systems of different densities in a quantizing magnetic field". United States. doi:10.1134/S1063776106040182.
@article{osti_21067699,
title = {Resonant tunneling of electrons between two-dimensional systems of different densities in a quantizing magnetic field},
author = {Popov, V. G., E-mail: popov@ipmt-hpm.ac.ru and Dubrovskii, Yu. V. and Portal, J.-C.},
abstractNote = {The results of experimental investigation of the vertical electron transport in a GaAs/Al{sub 0.3}Ga{sub 0.7}As/GaAs single-barrier tunneling heterostructure with a doped barrier are presented. Two-dimensional accumulation layers appear on different sides of the barrier as a result of the ionization of Si donors in the barrier layer. The nonmonotonic shift of the current peak is found in the I-V curve of the tunneling diode in a magnetic field perpendicular to the planes of two-dimensional layers. Such a behavior is shown to be successfully explained in the model of appearing the Coulomb pseudogap and the pinning of the spin-split Landau levels at the Fermi levels of the contacts. In this explanation, it is necessary to assume that the Lande factor is independent of the filling factors of the Landau levels and is g* = 7.5 for both layers.},
doi = {10.1134/S1063776106040182},
journal = {Journal of Experimental and Theoretical Physics},
number = 4,
volume = 102,
place = {United States},
year = {Sat Apr 15 00:00:00 EDT 2006},
month = {Sat Apr 15 00:00:00 EDT 2006}
}