CONDENSED MATTER

Magnetic field rectifiers using semicircular Josephson junctions

P. D. Shaju, V. C. Kuriakose

Department of Physics, Cochin University of Science and Technology

Abstract: A novel method for rectifying alternating magnetic fields is demonstrated using fluxons in semicircular Josephson junctions. An external magnetic field applied parallel to the dielectric barrier of the semicircular junction has opposite polarities at the ends of the junction and supports penetration of opposite polarity fluxons into the junction in the presence of a constant dc bias. When the direction of the field is reversed, flux penetration is not possible and flux-free state exists in the junction. Thus effective rectification of an alternating magnetic field can be achieved in semicircular Josephson junctions. This unique phenomenon is specific to this geometry and can be employed in rf SQUID magnetometers.

PACS: 05.45.Yv, 74.50.+r, 85.25.Cp

Received: 15.04.2002

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2002, 76:1, 11–16

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