%0 Journal Article %K Thin films %K Perovskite %K Oxides %K Manganese compounds %K Epitaxial growth %K Superlattices %K Magnetic field effects %K Magnetic films %K Electric conductivity measurement %K Epitaxial magnetoresistive films %K Giant magnetoresistance increase %K Laser-ablated oxide films %K Manganese oxide magnetic films %K Perovskite magnetic films %K Superlattice magnetic films %A S Jin %A T.H Tiefel %A M McCormack %A R.A Fastnacht %A Ramamoorthy Ramesh %A L.H Chen %B Science %D 1994 %G eng %P 413-415 %R 10.1126/science.264.5157.413 %T Thousandfold change in resistivity in magnetoresistive La-Ca-Mn-O films %V 264