Dresden 2006 – wissenschaftliches Programm
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HL: Halbleiterphysik
HL 27: Symposium New phenomena in edge transport of QHE systems
HL 27.3: Fachvortrag
Mittwoch, 29. März 2006, 15:30–16:00, HSZ 01
The Detection and Spectroscopy of Millimeter Wave Radiation based on the Interference of Edge-Magnetoplasmons — •Jurgen Smet1, Igor Kukushkin1,2, Chunping Jiang1, Sergey Mikhailov1,3, and Klaus von Klitzing1,2 — 1Max-Planck-Institute for Solid State Physics, 70569 Stuttgart, Germany — 2Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432 Russia — 3Mid-Sweden University, ITM, Electronics Design Division, 85170 Sundsval, Sweden
A two-dimensional electron system patterned in a suitable shape and subjected to monochromatic microwave radiation exhibits a photo-voltage, which oscillates periodically with an applied magnetic field. This phenomenon is distinct from the recently discovered microwave induced zero resistance effect and persists even in samples of moderate quality. The periodicity depends approximately linearly on the carrier density and is inversely proportional to the frequency of the incident radiation. This photovoltaic effect is ascribed to the interference of coherently excited edge magnetoplasmons. Its robustness up to liquid nitrogen temperatures offers interesting perspectives for using it for millimeter and sub-millimeter wave detection and spectroscopy.