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.
Komissinskiy
P
P
Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia.
Ovsyannikov
G A
GA
Borisenko
I V
IV
Kislinskii
Yu V
YV
Constantinian
K Y
KY
Zaitsev
A V
AV
Winkler
D
D