Transition between quantum states in a parallel-coupled double quantum dot


Journal Article

Transition between quantum states in a double quantum dot (DQD) arising from strong electron and spin correlations was studied. A continuous transition from Kondo state, which exhibits a single peak Kondo resonance, to another exhibiting a double peak was observed, when the interdot coupling in the parallel-coupled DQD was increased. Evidence for spin entanglement between the excess electrons in each dot was provided by the transitions into the double-peak state. The peak splitting was found to merge and become substantially smaller than the interdot coupling because of strong Coloumb effects.

Full Text

Duke Authors

Cited Authors

  • Chen, JC; Chang, AM; Melloch, MR

Published Date

  • April 30, 2004

Published In

Volume / Issue

  • 92 / 17

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.92.176801

Citation Source

  • Scopus