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VOLUME 38 (1983) | ISSUE 5 | PAGE 235
Interpretation of the oscillations of the longitudinal conductivity corresponding to a two-dimensional impurity band
Because of a correlation in the positions of charged centers, a system which has not had time to complete a structural change during the nonequilibrium filling of an impurity band may complete the structural change through the formation of a superstructure. If the external voltage is varied smoothly, the effect can give rise to oscillations in the rate at which the impurity band is filled, in the band curvature of the semiconductor, and in the surface conductivity.