New phenomena in coupled transport between 2D and 3D electron-gas layers

P. M. Solomon, P. J. Price, D. J. Frank, and D. C. La Tulipe
Phys. Rev. Lett. 63, 2508 – Published 27 November 1989
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Abstract

We report, for the first time, measurements of a current-to-current coupling between 2D and 3D electron-gas (EG) layers in the AlGaAs/GaAs system, utilizing an n+ GaAs gate as the 3DEG layer. Current driven through either of the layers, which are only 30 nm apart, induces current flow in the other layer. Current-to-current transfer ratios of the order of 3×105 have been observed, and there is a sign reversal of the interaction at temperatures below 40 K. This and other effects can be explained by invoking Coulomb mutual scattering to couple energy and momentum between the two layers.

  • Received 27 July 1989

DOI:https://doi.org/10.1103/PhysRevLett.63.2508

©1989 American Physical Society

Authors & Affiliations

P. M. Solomon, P. J. Price, D. J. Frank, and D. C. La Tulipe

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

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Issue

Vol. 63, Iss. 22 — 27 November 1989

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