The population inversion and novel magnetoconductivity oscillations induced by resonant microwave irradiation in multi-subband two-dimensional electron systems
Yu. P. Monarkha
Verkin Institute for Low Temperature Physics and Engineering of the NAS of Ukraine, 61103 Kharkov, Ukraine
Abstract
The possibility of a population inversion in a multi-subband two-dimensional
(2D) electron system exposed to resonant microwave (MW) radiation and a
static magnetic field is shown. Theoretical analysis given here indicates that the resonant
excitation of the third subband, necessary for the population inversion, is accompanied
by novel magnetoconductivity oscillations in the 2D electron
system formed on the surface of liquid helium.