Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2005-10-19
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages and 4 figures. Accepted in Phys Rev B
Scientific paper
10.1103/PhysRevB.72.193414
In this work we address theoretically a key issue concerning microwave-induced longitudinal resistivity oscillations and zero resistance states, as is tempoerature. In order to explain the strong temperature dependence of the longitudinal resistivity and the thermally activated transport in 2DEG, we have developed a microscopic model based on the damping suffered by the microwave-driven electronic orbit dynamics by interactions with the lattice ions yielding acoustic phonons. Recent experimental results show a reduction in the amplitude of the longitudinal resistivity oscillations and a breakdown of zero resistance states as the radiation intensity increases. In order to explain it we have included in our model the electron heating due to large microwave intensities and its effect on the longitudinal resistivity.
Inarrea Jesus
Platero Gloria
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