Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2010-10-05
Fiz. Nizk. Temp. 37, 108-111 (2011) [Low Temp. Phys. 37 (2011)]
Physics
Condensed Matter
Other Condensed Matter
Scientific paper
It is shown that a nonequilibrium filling of an upper surface subband induced by the microwave resonance can be the origin of the absolute negative conductivity and zero-resistance states for the two-dimensional electron system on liquid helium under magnetic field applied normally. Contrary to the similar effect reported for semiconductor systems, an oscillating sign-changing correction to the dc-magnetoconductivity appears due to quasi-elastic iter-subband scattering which does not involve photons. The analysis given explains remarkable magnetooscillations and zero-resistance states recently observed for electrons on liquid helium.
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