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Phys Rev Lett. 2003 Apr 4;90(13):136602. Epub 2003 Apr 2.

Two-channel Kondo effect in a modified single electron transistor.

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1
Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 76100, Israel.

Abstract

We suggest a simple system of two electron droplets which should display two-channel Kondo behavior at experimentally accessible temperatures. Stabilization of the two-channel Kondo fixed point requires fine control of the electrochemical potential in each droplet, which can be achieved by adjusting voltages on nearby gate electrodes. We study the conditions for obtaining this type of two-channel Kondo behavior, discuss the experimentally observable consequences, and explore the generalization to the multichannel Kondo case.

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