Dynamics of the excitonic condensed phase pulses in coupled quantum wells

We consider the dynamics of exciton condensed phase pulses in two interacting quantum wells, in which excitons are excited and are acted upon by an external driving force. We use the phenomenological expression of free energy for excitons and take into account the finiteness of the exciton lifetime....

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Veröffentlicht in:Low temperature physics (Woodbury, N.Y.) N.Y.), 2020-05, Vol.46 (5), p.525-530
Hauptverfasser: Mykhaylovskyy, V. V., Sugakov, V. I.
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Sprache:eng
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Zusammenfassung:We consider the dynamics of exciton condensed phase pulses in two interacting quantum wells, in which excitons are excited and are acted upon by an external driving force. We use the phenomenological expression of free energy for excitons and take into account the finiteness of the exciton lifetime. It is assumed that the excitonic condensed phase arises due to the interaction between excitons, and that the condensed phase parameters depend on the exciton lifetime. In a long well, a periodic flow of pulses occurs, the speed of which depends on the driving force. It is shown that the distance between the pulses and other parameters can be controlled by irradiating another region of the quantum well, far from the observation region.
ISSN:1063-777X
1090-6517
DOI:10.1063/10.0001057