Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2003-05-20
Phys. Rev. B 68, 193402 (2003)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 pages, 1 figure
Scientific paper
10.1103/PhysRevB.68.193402
We calculate the contribution of the photon-assisted interaction of electrons with leaky interface phonons to the dissipative dc photoconductivity of a two-dimensional electron system in a magnetic field. The calculated photoconductivity as a function of the frequency of microwave radiation and the magnetic field exhibits pronounced oscillations. The obtained oscillation structure is different from that in the case of photon-assisted interaction with impurities. We demonstrate that at a sufficiently strong microwave radiation in the certain ranges of its frequency (or in certain ranges of the magnetic field) this mechanism can result in the absolute negative conductivity.
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