Quantum transport studies of grain boundaries in p-Hg1-xMnxTe.

Autor: Grabecki, G., Dietl, T., Sobkowicz, P., Kossut, J., Zawadzki, W.
Předmět:
Zdroj: Applied Physics Letters; 1984, Vol. 45 Issue 11, p1214-1216, 3p
Abstrakt: We show that charged traps at grain boundaries in p-Hg1-xMnxTe lead to the formation of an inversion layer. The layers are dominant channels of electrical conductivity at low temperatures. By means of the Shubnikov-de Haas effect measurements we demonstrate that the electron gas in the layer forms a quasi-two-dimensional system. We determine electric subband populations and effective masses. We establish parameters of the potential well at the grain boundary within a simple model. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index