Temperature and magnetic field dependent transport anisotropies in La0.7Ca0.3MnO3 films
- 10 January 2000
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 76 (2) , 218-220
- https://doi.org/10.1063/1.125707
Abstract
We report the temperature and field dependence of anisotropic magnetoresistance(AMR) in fully strained tetragonal thin films of the colossal magnetoresistance manganite La 0.7 Ca 0.3 MnO 3 . The behavior of the AMR is very different from that found in conventional metallic alloys. Its magnitude is peaked near the Curie temperature T C and becomes small at low temperature. It has two distinct symmetry components: one twofold symmetric about the transport current direction dominant near T C , the other fourfold symmetric with symmetry axes of the crystal, appearing at low temperature.Keywords
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