ABSTRACT
The samples were grown by MBE, and uniaxial compression up to 2 kbar in the [110] direction was applied at temperatures from 1.5 K to 150 K. Long time relaxation effects in the resistivity were detected in the course of compression (loading) and unloading. By heating to 180 K and subsequent cooling, equilibrium values of resistance versus stress were established. The compression causes a decrease in resistance. At 4.2 K and 2 kbar the resistance is 35% of its value without compression. Hall effect measurements indicate a free carrier density which is only weakly (less than a few percent) dependent on the compression.
