Abstract:
The field-induced carrier redistribution between the subbands of a semiconductor superlattice is treated using the density matrix approach. The unit cell of the superlattice consists of one quantum well with three occupied subbands. Carrier scattering on polar-optical phonons is described within the microscopic bulk phonon model. At the tunneling resonance, an intrinsic population inversion is observed. The temperature dependence of the population inversion is determined.
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Received 25 October 2002 / Received in final form 27 November 2002 Published online 6 March 2003
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Kleinert, P., Bryksin, V. Density matrix theory of population inversion in biased semiconductor superlattices. Eur. Phys. J. B 31, 489–494 (2003). https://doi.org/10.1140/epjb/e2003-00058-x
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DOI: https://doi.org/10.1140/epjb/e2003-00058-x