Quantum Interference of Electron Wave in Metal (CoSi2)/Insulator (CaF2) Resonant Tunneling Hot Electron Transistor Structure
- 1 December 1994
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 33 (12B) , L1762
- https://doi.org/10.1143/jjap.33.l1762
Abstract
We report the observation of multiple negative differential resistance (NDR) in nanometer-thick metal (CoSi2)/insulatro (CaF2) resonant tunneling hot electron transistor (RHET) grown on a silicon substrate. In this transistor, electrons from a resonant tunneling emitter with a 2.2-nm-thick CoSi2 quantum well are transferred to the conduction band of a 4.0-nm-thick CaF2 collector barrier region. Multiple NDR observed here may be attributed to the modulation of the transmission probability of electron waves due to quantum interference in the conduction band of the insulator (CaF2) collector barrier layer between two metal (CoSi2) layers, which is a different mechanism from the resonance in quantum wells previously reported.Keywords
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