Electron interference effects in quantum wells: Observation of bound and resonant states

M. Heiblum, M. V. Fischetti, W. P. Dumke, D. J. Frank, I. M. Anderson, C. M. Knoedler, and L. Osterling
Phys. Rev. Lett. 58, 816 – Published 23 February 1987
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Abstract

Quasimonoenergetic ballistic electrons were injected into GaAs potential wells of various thicknesses (2972 nm). Strong modulation in the injected currents, as a function of the injection energy, was observed and correlated with electron coherence effects. A self-consistent solution of Poisson and Schrödinger equations was needed to relate these effects to the bound and, in particular, resonant quantum states in the well. The good match with theory justified the use (and led to an expression) of the electron ‘‘energy effective mass’’ in the central valley, in an energy range where nonparabolicity and valley transfer are significant and make this determination, usually, difficult.

  • Received 6 November 1986

DOI:https://doi.org/10.1103/PhysRevLett.58.816

©1987 American Physical Society

Authors & Affiliations

M. Heiblum, M. V. Fischetti, W. P. Dumke, D. J. Frank, I. M. Anderson, C. M. Knoedler, and L. Osterling

  • IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

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Vol. 58, Iss. 8 — 23 February 1987

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