Electron-nuclear spin transfer in quantum-dot networks

M. Prada, R. C. Toonen, R. H. Blick, P. Harrison

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)


We investigate the conductance spectra of coupled quantum dots to study systematically the nuclear spin relaxation of different geometries of a two-dimensional network of quantum dots and observe spin blockade dependence on the electronic configurations. We derive the conductance using the Beenakker approach generalized to an array of quantum dots where we consider the nuclear spin transfer to electrons by hyperfine coupling. This allows us to predict the relevant memory effects on the different electronic states by studying the evolution of the single electron resonances in the presence of nuclear spin relaxation. We find that the gradual depolarization of the nuclear system is imprinted in the conductance spectra of the multidot system. Our calculations of the temporal evolution of the conductance resonance reveal that spin blockade can be lifted by hyperfine coupling.

Original languageEnglish
Pages (from-to)S266-S272
Number of pages7
Issue number5
Early online date29 Mar 2005
Publication statusPublished - 1 May 2005
Externally publishedYes
EventTrends in Nanotechnology 2004 - Segovia, Spain
Duration: 13 Sep 200417 Sep 2004


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