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VOLUME 59 (1994) | ISSUE 11 | PAGE 760
Magnetotransport properties of a uniaxially compressed 2D electron gas at a grain boundary of Hg1-xCdxTe (x=0.23) bicrystals
Quantum oscillations of the magnetoresistance of 2D electrons in an inversion layer at the interface of p-Hgi_,Cd^Te (x = 0.23) bicrystals have been studied during hydrostatic compression to P=8 kbar and during uniaxial compression with σνν= 1.5 kbar in the direction perpendicular to the 2D layer. The oscillation frequency F, and correspondingly the density я, of the 2D electrons in each of the three observed energy subbands in the quantum well increase during the uniaxial compression. This change is opposite to the change observed during the hydrostatic compression, at which the nsi in all subbands fall off rapidly with the pressure, so that the inversion layer disappears at P>10 kbar.