Cotunneling Spectroscopy in Few-Electron Quantum Dots
Mesoscale and Nanoscale Physics
2009-11-10 v1
Abstract
Few-electron quantum dots are investigated in the regime of strong tunneling to the leads. Inelastic cotunneling is used to measure the two-electron singlet-triplet splitting above and below a magnetic field driven singlet-triplet transition. Evidence for a non-equilibrium two-electron singlet-triplet Kondo effect is presented. Cotunneling allows orbital correlations and parameters characterizing entanglement of the two-electron singlet ground state to be extracted from dc transport.
Cite
@article{arxiv.cond-mat/0408276,
title = {Cotunneling Spectroscopy in Few-Electron Quantum Dots},
author = {D. M. Zumbuhl and C. M. Marcus and M. P. Hanson and A. C. Gossard},
journal= {arXiv preprint arXiv:cond-mat/0408276},
year = {2009}
}
Comments
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