Kondo time scales for quantum dots - response to pulsed bias potentials

Details Kondo time scales for quantum dots - response to pulsed bias potentials Kondo time scales for quantum dots - response to pulsed bias potentials

1999-09-03

arxiv.org/abs/cond-mat/9909063v2

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages with 4 encapsulated figures which come in separate postscript files: latex file: text.tex figures: fig1.eps, fig2.eps,

Scientific paper

10.1103/PhysRevB.61.R13341

The response of a quantum dot in the Kondo regime to rectangular pulsed bias potentials of various strengths and durations is studied theoretically. It is found that the rise time is faster than the fall time, and also faster than time scales normally associated with the Kondo problem. For larger values of the pulsed bias, one can induce dramatic oscillations in the induced current with a frequency approximating the splitting between the Kondo peaks that would be present in steady state. The effect persists in the total charge transported per pulse, which should facilitate the experimental observation of the phenomenon.

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