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Title: Kondo time scales for quantum dots: Response to pulsed bias potentials

Abstract

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. (c) 2000 The American Physical Society.

Authors:
 [1];  [1];  [2]
  1. Center for Materials Theory, Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854-8019 (United States)
  2. Department of Physics and Rice Quantum Institute, Rice University, Houston, Texas 77251-1892 (United States)
Publication Date:
OSTI Identifier:
20216567
Resource Type:
Journal Article
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 61; Journal Issue: 20; Other Information: PBD: 15 May 2000; Journal ID: ISSN 1098-0121
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; KONDO EFFECT; SEMICONDUCTOR JUNCTIONS; ELECTRIC CONDUCTIVITY; THEORETICAL DATA

Citation Formats

Plihal, Martin, Langreth, David C., and Nordlander, Peter. Kondo time scales for quantum dots: Response to pulsed bias potentials. United States: N. p., 2000. Web. doi:10.1103/PhysRevB.61.R13341.
Plihal, Martin, Langreth, David C., & Nordlander, Peter. Kondo time scales for quantum dots: Response to pulsed bias potentials. United States. doi:10.1103/PhysRevB.61.R13341.
Plihal, Martin, Langreth, David C., and Nordlander, Peter. Mon . "Kondo time scales for quantum dots: Response to pulsed bias potentials". United States. doi:10.1103/PhysRevB.61.R13341.
@article{osti_20216567,
title = {Kondo time scales for quantum dots: Response to pulsed bias potentials},
author = {Plihal, Martin and Langreth, David C. and Nordlander, Peter},
abstractNote = {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. (c) 2000 The American Physical Society.},
doi = {10.1103/PhysRevB.61.R13341},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
issn = {1098-0121},
number = 20,
volume = 61,
place = {United States},
year = {2000},
month = {5}
}