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The Quantum Interference Effect Transistor

D. M. Cardamone·C. A. Stafford·S. Mazumdar
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Abstract

We propose a new type of molecular transistor, the Quantum Interference Effect Transistor (QuIET), based on tunable current suppression due to quantum interference. We show that any aromatic hydrocarbon ring has two-lead configurations for which current at small voltages is suppressed by destructive interference. A transistor can be created by providing phase relaxation or decoherence at a site on the ring. We propose several molecules which could tunably introduce the necessary dephasing or decoherence, as well as a proof of principle using a scanning tunneling microscope tip. Within the self-consistent Hartree-Fock approximation, the QuIET is shown to have characteristics strikingly similar to those of conventional field effect and bipolar junction transistors.

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D. M. Cardamone, C. A. Stafford, S. Mazumdar. 2005-03-22. The Quantum Interference Effect Transistor. https://arxiv.org/abs/cond-mat/0503540

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