arXiv:cond-mat/9912126 Abstract

arXiv:cond-mat/9912126Abstract References Reviews Resources

Suppression of the Kondo Effect in a Quantum Dot by Microwave Radiation

Jeroen M. Elzerman, Silvano De Franceschi, David Goldhaber-Gordon, Wilfred G. van der Wiel, Leo P. Kouwenhoven

Published 1999-12-08Version 1

We have studied the influence of microwave radiation on the transport properties of a semiconductor quantum dot in the Kondo regime. In the entire frequency range tested (10--50 GHz), the Kondo resonance vanishes by increasing the microwave power. This suppression of the Kondo resonance shows an unexpected scaling behavior. No evidence for photon-sideband formation is found. The comparison with temperature-dependence measurements indicates that radiation-induced spin dephasing plays an important role in the suppression of the Kondo effect.

Comments: 15 pages

Categories: cond-mat.mes-hall, cond-mat.str-el

Keywords: kondo effect, microwave radiation, suppression, semiconductor quantum dot, kondo resonance vanishes

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