Abstract
We report the growth of a new class of superlattice structure, consisting of alternate layers of La0.7Sr0.3MnO3 (LSMO) and ZnO, which exhibits giant magnetoresistance at low fields. These superlattices were fabricated using a novel pulsed-laser deposition technique with a specially designed target assembly. Giant magnetoresistance of > 250% has been observed in these structures in current-in-plane configuration on the application of just -400 Gauss of magnetic field over the broad temperature range 15-200 K. Observation of giant magnetoresistance at such low magnetic fields is a groundbreaking step in the field of novel magnetic materials and devices.
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