Photon-induced vanishing of magnetoconductance in 2D electrons on liquid helium

Phys Rev Lett. 2010 Nov 26;105(22):226801. doi: 10.1103/PhysRevLett.105.226801. Epub 2010 Nov 22.


We report on a novel transport phenomenon realized by optical pumping in surface state electrons on helium subjected to perpendicular magnetic fields. The electron dynamics is governed by the photon-induced excitation and scattering-mediated transitions between electric subbands. In a range of magnetic fields, we observe vanishing longitudinal conductivity σ(xx)→0. Our result suggests the existence of radiation-induced zero-resistance states in the nondegenerate 2D electron system.