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References (4)
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* Electronic address: kubo@will.brl.ntt -
Here we assume that the orbital states of the two QDs are the same -
For various quotients between αS and αD, |αS| dependence of the spin-spin correlation function at ǫ1/ Γ = ǫ2/ Γ = −6 indicated by the green circle in Fig -
A. Hewson, P. Coleman (1993)
The Kondo problem to heavy fermionsContemporary Physics, 34
- Publisher
- American Physical Society (APS)
- Copyright
- Copyright © 2011 The American Physical Society
- ISSN
- 1550-235X
- DOI
- 10.1103/PhysRevB.83.115310
- Publisher site
- See Article on Publisher Site
Abstract
Spin and orbital Kondo effects and the related shot noise for a laterally coupled double quantum dot are studied taking account of coherent indirect coupling via a reservoir. We calculate the linear conductance and shot noise for various charge states to distinguish between the spin and the orbital Kondo effects. We find that a novel antiferromagnetic exchange coupling can be generated by the coherent indirect coupling, and it works to suppress the spin Kondo effect when each quantum dot holds just one electron. We also show that we can capture the feature of the pseudospin Kondo effect from the shot noise measurement.
Journal
Physical Review B – American Physical Society (APS)
Published: Mar 15, 2011