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arXiv · cond-mat/9811347

Microwave surface impedance of proximity-coupled superconducting (Nb) / spin-glass (CuMn) bilayers

L. V. Mercaldo·Steven M. Anlage·L. Maritato
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Abstract

The surface impedance of Nb/CuMn (superconducting/spin-glass) bilayers has been measured at 10 GHz with the parallel plate resonator technique to obtain information about the exotic behavior of the order parameter in superconducting/magnetic proximity systems. The data strongly differs from the superconducting/normal-metal case, showing the magnetic nature of the CuMn layer, which acts as a weak ferromagnet. The results are described in the framework of two models for the electrodynamics of superconducting/ferromagnetic (S/M) bilayers characterized by a proximity-coupling length scale which is independent of temperature.

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L. V. Mercaldo, Steven M. Anlage, L. Maritato. 1998-11-24. Microwave surface impedance of proximity-coupled superconducting (Nb) / spin-glass (CuMn) bilayers. https://doi.org/10.1103/physrevb.59.4455

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