Phase Evolution in a Kondo Correlated System
Abstract
The coherence and phase evolution of electrons in a mesoscopic system in the Kondo correlated regime were studied. The Kondo effect, in turn, is one of the most fundamental many-body effects where a localized spin interacts with conduction electrons in a conductor. Results were obtained by embedding a quantum dot (QD) in a double path electronic interferometer and measuring interference of electron waves. The Phase was found to evolve in a range twice as large as the theoretically predicted one. Moreover, the phase proved to be highly sensitive to the onset of Kondo correlation, thus serving as a new fingerprint of the Kondo effect.Keywords
All Related Versions
- Version 1, 2000-07-21, ArXiv
- Version 2, 2000-07-26, ArXiv
- Published version: Science, 290 (5492), 779.
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