R. Gross, P. Chaudhari, et al.
Physical Review B
Paper
Critical current of a high Tc Josephson grain boundary junction in high magnetic field
Abstract
The critical current (Ic) of YBa2Cu3O 7-δ grain boundary Josephson junctions was measured up to magnetic fields of 5 T. Magnetic field history dependent Ic values were observed even after correction for self-field effects stemming from hysteretic shielding currents in the grain adjacent to the boundary. A novel feature observed is an anomalous increase in Ic in high magnetic fields of several Telsa.
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