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Phonon-Mediated Nonequilibrium Interaction between Nanoscale Devices

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Schinner, G. J. ; Tranitz, H.-P. ; Wegscheider, Werner ; Kotthaus, J. P. ; Ludwig, S.
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Date of publication of this fulltext: 17 Aug 2009 10:56


Interactions between mesoscopic devices induced by interface acoustic phonons propagating in the plane of a two-dimensional electron system (2DES) are investigated by phonon spectroscopy. In our experiments, ballistic electrons injected from a biased quantum point contact emit phonons and a portion of them are reabsorbed exciting electrons in a nearby degenerate 2DES. We perform energy ...


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