Photoexcited quantum wells: Nonlinear screening, bistability, and negative differential capacitance

R. Merlin and D. A. Kessler
Phys. Rev. B 41, 9953 – Published 15 May 1990
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Abstract

The dielectric response of an electron-hole plasma confined to a slab is calculated within the Hartree approximation for electric fields perpendicular to the slab walls. The results are used to infer the capacitance behavior of photoexcited quantum-well structures under different rate conditions. Case studies show that nonlinearities in the carrier-density dependence of the energy spectrum and scattering times can lead to bistability and negative differential capacitance.

  • Received 21 August 1989

DOI:https://doi.org/10.1103/PhysRevB.41.9953

©1990 American Physical Society

Authors & Affiliations

R. Merlin and D. A. Kessler

  • Department of Physics, The University of Michigan, Ann Arbor, Michigan 48109-1120

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Vol. 41, Iss. 14 — 15 May 1990

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