Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2003-06-14
Phys. Rev. B 70, 155310 (2004)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 color figures; published
Scientific paper
10.1103/PhysRevB.70.155310
High mobility two-dimensional electron systems exhibit vanishing resistance over broad magnetic field intervals upon excitation with microwaves, with a characteristic reduction of the resistance with increasing radiation intensity at the resistance minima. Here, we report experimental results examining the voltage - current characteristics, and the resistance at the minima vs. the microwave power. The findings indicate that a non-linear V-I curve in the absence of microwave excitation becomes linearized under irradiation, unlike expectations, and they suggest a similarity between the roles of the radiation intensity and the inverse temperature.
Johnson William B.
Klitzing Klaus von
Mani R. G.
Narayanamurti Venkatesh
Smet Jurgen H.
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