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

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