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Regular version of the site

Article

Spin transport in the bulk of two-dimensional Hall insulator

Applied Physics Letters. 2019. Vol. 114. No. 6. P. 1-5.
Kulik L. V., Gorbunov A. V., Zhuravlev A., Kuznetsov V. A., Kukushkin I. V.

Magneto-fermionic condensate under study is a Bose-Einstein condensate of cyclotron spin-flip magnetoexcitons in a quantum Hall insulator. This condensate features unique properties such as millisecond range lifetime and hundreds of micrometers of propagation length. In this study, utilizing the photo-induced resonant reflection technique, we measured the exciton escape time. Finally, we estimated the exciton condensate propagation velocity as 25 m/s, which is much higher than a single particle propagation velocity. We also proposed a mechanism of exciton condensation.