Condensed Matter Physics: Magnetoresistance in Layered Manganite Compounds

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Science  06 Dec 1996:
Vol. 274, Issue 5293, pp. 1630
DOI: 10.1126/science.274.5293.1630


Magnetoresistance is an effect in which the electrical resistance of a material changes in a magnetic field. This phenomenon is of great importance in magnetic data recording, where a magnetoresistive sensor detects the patterns of bits on magnetic storage media. In his Perspective, Goldman discusses results reported in the same issue by Kimura et al. (p. 1698) that reveal how current is carried in an important group of materials, the layered manganites.