Spin Transport of Excitons

Leonard, J. R.; Kuznetsova, Y. Y.; Yang, Sen; Butov, L. V.; Ostatnický, T.; Kavokin, A.; Gossard, A. C.

doi:10.1021/nl9024227.s001

Spin Transport of Excitons

journal contribution

posted on 2009-12-09, 00:00 authored by J. R. Leonard, Y. Y. Kuznetsova, Sen Yang, L. V. Butov, T. Ostatnický, A. Kavokin, A. C. Gossard

We report on observation of the spin transport of spatially indirect excitons in GaAs/AlGaAs coupled quantum wells (CQW). Exciton spin transport over substantial distances, up to several micrometers in the present work, is achieved due to orders of magnitude enhancement of the exciton spin relaxation time in CQW with respect to conventional quantum wells.