Optical absorption in incoherent and coherent states of a quantum Hall system

S. Dickmann

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arXiv · 1801.02418

Optical absorption in incoherent and coherent states of a quantum Hall system

S. Dickmann

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Abstract

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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S. Dickmann. 2018-01-08. Optical absorption in incoherent and coherent states of a quantum Hall system. https://arxiv.org/abs/1801.02418

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