Piezoelectric field determination in strained InGaAs quantum wells grown on [111]B GaAs substrates by differential photocurrent

Electromechanical Fields in Quantum Heterostructures and Superlattices

“…Macroscopically however, all dipole moments cancel each other and the nonhomogeneous charge distribution is not visible as long as it is not deformed. Notable semiconductor materials that can be fabricated in zincblende f o r ma r ea r s e n i d e ss u c ha sG a A s ,A l A s ,o rI n A s ;n i t r i d e ss u c ha sG a N ,A l N ,I n N ,a sw e l la s oxides such as ZnO (Auld, 1990;Davydov, 2002;Fonoberov & Balandin, 2003;J.I.Izpura et al, 1999;Vurgaftman et al, 2001). Fig.…”