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arxiv: cond-mat/9912126 · v1 · submitted 1999-12-08 · ❄️ cond-mat.mes-hall · cond-mat.str-el

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 This is my paper
classification ❄️ cond-mat.mes-hall cond-mat.str-el
keywords kondomicrowavesuppressioneffectquantumradiationresonancebehavior
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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.

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