Experimental observation of drag of 2D electrons by far-IR light
Beregulin E. V., Voronov P. M., Ivanov S.V., Kop'ev P. S., Yaroshetskii I. D.
A fast longitudinal photovoltage has been observed to arise when a 2D electron gas is exposed to far-IR light. The observed photovoltage is shown to be due to photon drag of electrons in the course of indirect optical transitions.