Light Absorption Properties Related to Long-living Ensemble of Spin Excitations in an Unpolarized Quantum Hall System

  • S. Dickmann


In connection with recent studies of extremely long-living spin-cyclotron excitations (actually magneto-excitons) in a quantum Hall electron gas, we discuss contribution to the light-absorption related to the presence of a magneto-exciton ensemble in this purely electronic system. Since the weakly interacting excitations have to obey the Bose-Einstein statistics, one can expect appearance of a coherent state in the ensemble. A comparative analysis of both incoherent and coherent cases is done. Conditions for a phase transition from the incoherent state to the coherent one are discussed.


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© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  1. 1.Institute for Solid State Physics of RASChernogolovkaRussia

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