PMID: 11909490Mar 23, 2002Paper

Two-stage Kondo effect in a quantum dot at a high magnetic field

Physical Review Letters
W G van der WielT Fukui

Abstract

We report a strong Kondo effect (Kondo temperature approximately 4 K) at high magnetic field in a selective area growth semiconductor quantum dot. The Kondo effect is ascribed to a singlet-triplet transition in the ground state of the dot. At the transition, the low-temperature conductance approaches the unitary limit. Away from the transition, for low bias voltages and temperatures, the conductance is sharply reduced. The observed behavior is compared to predictions for a two-stage Kondo effect in quantum dots coupled to single-channel leads.

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Citations

Oct 6, 2011·Nature Communications·Aitor MugarzaPietro Gambardella
May 23, 2006·Physical Review Letters·Ribhu K KaulHarold U Baranger
Apr 7, 2010·Physical Review Letters·Nicolas RochFranck Balestro
Feb 7, 2003·Physical Review Letters·László BordaJan von Delft
Mar 7, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·S XiangY Ochiai
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May 30, 2021·Nature Communications·Tokuro HataKensuke Kobayashi
Jun 24, 2010·ACS Nano·Gavin David Scott, Douglas Natelson

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