Phase Evolution in a Kondo Correlated System

Details Phase Evolution in a Kondo Correlated System Phase Evolution in a Kondo Correlated System

2000-07-21

arxiv.org/abs/cond-mat/0007332v2

science, 290, 779 (2000)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures. typos corrected. Changed to APS PRL style

Scientific paper

10.1126/science.290.5492.779

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.

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