Peak observed in the secondary voltage of a flux transformer configuration in Bi2Sr2CaCu2O8-x

Abstract

We have measured the ab-plane, c-axis, and the secondary voltage of Bi2Sr2CaCu2O8-x single crystals simultaneously in low magnetic fields for both H parallel to c and H parallel to ab. The peak in V-s reduces sharply in a field as low as similar to 40 G for H parallel to c, whereas it survives up to 1000 G for H parallel to ab. We compared the results with the calculation based on a simple resistor equivalent-circuit model.