Granular superconductors and ferromagnets: A proximity-effect-based analogue

A. Frydman, R. C. Dynes

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

We present a model and a set of measurements which demonstrate an analogy between superconducting and ferromagnetic granular films. For granular films of either Pb or Ni we are able to deposit sequential layers of different material and measure transport and magnetoresistance measurements in situ. In both cases, individual isolated grains are coupled via an overlayer material which does not possess superconductivity or ferromagnetism of the underlying granular material. This coupling induces long-range order. We compare the two effects and discuss the similarities in terms of proximity effects.

Original languageEnglish
Pages (from-to)1153-1165
Number of pages13
JournalPhilosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume81
Issue number9
DOIs
StatePublished - Sep 2001

Bibliographical note

Funding Information:
We are grateful for illuminating discussions with A. M. Berkowitz, F. Hellman, T. Kirk, L. M. Marchant, M. Pollak, S. Sankar and H. Suhl. This research was supported by the Israel-US Binational Science Foundation.

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