ESR in situ with a Josephson tunnel junction

K. Baberschke, K. D. Bures, S. E. Barnes

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Abstract

The in situ electron-spin resonance of a voltage-biased NbAuNb Josephson junction is reported. The Au barrier is doped with Gd or Er167 ions. Sharp resonances appear in the I-V curves at frequencies equivalent to the crystal-field splitting of AuGd (1.0 and 1.7 GHz) and to the hyperfine splitting of AuEr167 (2.87 GHz). The principle of this new type of ESR-Josephson-junction spectrometer, as well as its application, is discussed.

Original languageEnglish (US)
Pages (from-to)98-101
Number of pages4
JournalPhysical Review Letters
Volume53
Issue number1
DOIs
StatePublished - Jan 1 1984

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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