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RF Field-Driven Electron Tunneling through Mesoscale Junctions

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Document pages: 11 pages

Abstract: Preliminary results of a study are reported hereinvestigating mesoscopic tunnel junctions irradiated with coherentlow-intensity (-50 to -10 dB) pulsed microwave RF fields at moderately low (LN2)temperatures. Quantum tunneling of electrons was observed through fabricatedmesoscale gap junctions as a result ofcoherent irradiating fields at low temperatures around 77 - 100 K. The tunneling current was seen as a result of applied microwave fieldsacross the junctions, distinguishable from shot noise and resistance effects.The form of tunneling behavior does not lead to any conductance quantizationeffects which could manifest the junction as a Quantum Point Contact (QPC),hence it is surmised that the phenomenon is purely low intensity RFfield-induced tunneling of electrons across the mesoscale junctions at lowtemperatures.

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