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