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Japanese Journal of Applied Physics

Nonequilibrium Microwave Emission from DC-Biased High Tc YBa2Cu3O7-y Junctions

Kiejin Lee, Ienari Iguchi, Hiroyuki Arie, Eiji Kume

Published Mar 1, 1998• 17 citations
Publisher

Abstract

We report the observation of microwave emission from dc-biased high T c Au/insulator/YBa2Cu3O7-y junctions, which provides a novel method of generating broad-band microwaves. The microwave intensity is typically of the order of subpicowatts, and increases almost linearly with the increase of junction current and vanishes as the bath temperature approaches T c. The observed effect is not similar to the Josephson effect and may be interpreted in terms of the nonequilibrium dynamics involving Cooper pairs and quasiparticles.

DOI
10.1143/jjap.37.l278

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