A piezoelectric actuator was used for the in situ tunable uniaxial stress measurements at cryogenic temperatures in a two-dimensional electron systems confined to a modulation-doped AlAs quantum well. The energies and the occupation of the conduction-band minima and electronic properties of the electron system were controlled through stress application. The longitudinal and transverse strain were measured against the bias for the actuator at 300, 77 and 4.2 K. The results show that the strain was linear and exhibited little hysteresis with the applied bias.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)