Abstract
Tunneling characteristics along the [110] direction were measured in Y1Ba2Cu3O7 − δ\Insulator\In junctions as a function of the magnetic field H, applied parallel to the plane of the junction, along the c-axis. The junctions exhibit a Zero Bias Conductance Peak (ZBCP) which splits as H1/2. The data is in better agreement with a field-induced idxy gap component than with a Doppler-shift–induced field splitting.