Weig, E. M. and Blick, Robert H. and Brandes, T. and Kirschbaum, Jochen and Wegscheider, Werner and Bichler, Max and Kotthaus, J. P.
Single-Electron-Phonon Interaction in a Suspended Quantum Dot Phonon Cavity.
Physical Review Letters 92 (4), 046804.
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An electron-phonon cavity consisting of a quantum dot embedded in a freestanding GaAs/AlGaAs membrane is characterized using Coulomb blockade measurements at low temperatures. We find a complete suppression of single electron tunneling around zero bias leading to the formation of an energy gap in the transport spectrum. The observed effect is induced by the excitation of a localized phonon mode ...
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