Effect of exchange electron-electron interaction on conductivity of InGaAs single and double quantum wells in ballistic regime

S. V. Gudina, Yu. G. Arapov, V. N. Neverov, A. P. Savelyev, S. M. Podgonykh, N. G. Shelushinina, M. V. Yakunin

Published 2018-08-27Version 1

We report an experimental study of quantum conductivity corrections for two-dimensional electron gas in a GaAs/InGaAs/GaAs single and double quantum wells in a wide temperature range (1.8-100) K. We perform a comparison of our experimental data for the longitudinal conductivity at zero magnetic field to the theory of interaction-induced corrections to th transport coefficients. In the temperature range from 10 K up to (45-60) K, wich covers the ballistic interaction regimes for our samples, a rather good agreement between the theory and our experimental results has been found.