Observation of Josephson coupling through an interlayer of antiferromagnetically ordered chromium

Weides, M. , Disch, M., Kohlstedt, H. and Bürgler, D.E. (2009) Observation of Josephson coupling through an interlayer of antiferromagnetically ordered chromium. Physical Review B, 80(6), 064508. (doi:10.1103/PhysRevB.80.064508)

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Abstract

The supercurrent transport in metallic Josephson tunnel junctions with an additional interlayer made up by chromium, being an itinerant antiferromagnet, was studied. Uniform Josephson coupling was observed as a function of the magnetic field. The supercurrent shows a weak dependence on the interlayer thickness for thin chromium layers and decays exponentially for thicker films. The diffusion constant and the coherence length in the antiferromagnet were estimated. The antiferromagnetic state of the barrier was indirectly verified using reference samples. Our results are compared to macroscopic and microscopic models.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Weides, Professor Martin
Authors: Weides, M., Disch, M., Kohlstedt, H., and Bürgler, D.E.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Physical Review B
Publisher:American Physical Society
ISSN:1098-0121
ISSN (Online):1550-235X

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