A transistor structure has a semiconductive base layer located between an
emitter and a collector, the base layer during operation having an
inversion layer therein which spreads out in directions transverse to the
emitter-collector current path.
Other References
Japanese Journal of Applied Physics, vol. 23, No. 5, "Tunneling Hot
Electron Transistor Using GaAs/AlGaAs Heterojunctions", N. Yokoyama et
al., pp. L311-L312--May 1984.
Solid State Electronics, vol. 9, pp. 751-769, "Appraisal of
Semiconductor-Metal-Semiconductor Transistor"--1966.
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