Qin, H. and Simmel, F. and Blick, R. H. and Kotthaus, J.P. and Wegscheider, Werner and Bichler, Max
Determination of the complex microwave photoconductance of a single quantum dot.
Physical Review B 63 (3), 035320.
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A small quantum dot containing approximately 20 electrons is realized in a two-dimensional electron system of an AlxGa1-xAs/GaAs heterostructure. Conventional transport and microwave spectroscopy reveal the dot’s electronic structure. By applying a coherently coupled two-source technique, we are able to determine the complex microwave-induced tunnel current. The amplitude of this photoconductance ...
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