Observation of Al2O3: Cr3+ magnetic resonance via solitons in long Josephson junctions
F. Mehran, S. E. Barnes, C. C. Chi, R. L. Sandstrom, C. P. Umbach
DOI 10.1103/PhysRevB.36.7281 · Physical Review B
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Abstract
We have detected the zero-field electron-spin resonance signal of Al2O3 with ∼1000 ppm Cr3+ using an edge Josephson junction. The sample comprises the substrate upon which the junction was fabricated and the coupling to the electron-spin resonance is via the solitons which exist in these "long" devices.
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