Pair tunneling as a probe of the dynamics of magnetic insulators

Allen M Goldman, C. G. Kuper, Oriol T Valls

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A method of using the ac Josephson current between two superconducting electrodes to probe the spin fluctuations of a magnetic insulating barrier of a junction is suggested. The dc I-V characteristic of such a junction measured as a function of both the dc bias voltage V and the magnitude of a magnetic field parallel to the plane of the junction is predicted to be proportional to the imaginary part of the frequency- and wave-vector-dependent susceptibility of the magnetic material.

Original languageEnglish (US)
Pages (from-to)1340-1343
Number of pages4
JournalPhysical Review Letters
Issue number15
StatePublished - Jan 1 1984


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