Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2008-08-11
Applied Physics Letters 92, 192113, (2008)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 pages and 3 figures
Scientific paper
10.1063/1.2920170
Experimental results on microwave-induced magnetoresistance oscillation in two-dimensional electron systems show a similar behavior of these systems regarding temperature and microwave frequency. It is found that these oscillations tend to quench when frequency or temperature increase, approaching magnetoresistance to the response of the dark system. In this work we show that this experimental behavior can be addressed on the same theoretical basis. Microwave radiation forces the electron orbits to move back and forth being damped by interaction with the lattice. We show that this damping depends dramatically on microwave frequency and also on temperature. An increase in frequency or temperature gives rise to an increase in the lattice damping producing eventually a quenching effect in the magnetoresistance oscillations.
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