Josephson effect in hybrid oxide heterostructures with an antiferromagnetic layer.
Josephson coupling between an s- and d-wave superconductor through a 50 nm thick Ca1-xSrxCuO2 antiferromagnetic layer was observed for the hybrid Nb/Au/Ca1-xSrxCuO2/YBa2Cu3O7-delta heterostructures and investigated as a function of temperature, magnetic field, and applied millimeter-wave electromagnetic radiation. The magnetic field dependence of the supercurrent I(c)(H) exhibits anomalously rapid oscillations, which is the first experimental evidence of the theoretically predicted giant magneto-oscillations in Josephson junctions with antiferromagnetic interlayers.
Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia.
P
P
Komissinskiy
G A
GA
Ovsyannikov
I V
IV
Borisenko
Yu V
YV
Kislinskii
K Y
KY
Constantinian
A V
AV
Zaitsev
D
D
Winkler