Magnetotransport in thin films of La{sub n{minus}nx}Ca{sub 1+nx}Mn{sub n}O{sub 3n+1} (n = 2, 3, and {infinity})
- Nagoya Univ. (Japan). Dept. of Crystalline Materials Science
With a use of the epitaxial a-axis thin films of perovskite series La{sub n{minus}nx}Mn{sub n}O{sub 3n+1} (n = 2, 3, and {infinity}) with a fixed carrier concentration (x = 0.3), the transport properties of the series compounds have been examined to be associated with the difference in the number of the MnO{sub 2} layers. Results have indicated that a reduction in the number of layers results in systematic changes in the various features. These include an increase in resistivity, a decrease in resistivity peak temperature {Tc}{sup {rho}} corresponding to the metal-insulator transition, an enhancement of the maximum MR near {Tc}{sup {rho}}, and an increase in low temperature intrinsic MR. In order to explain the variation in these features with the number of MnO{sub 2} layers, it is necessary to take both anisotropic c-axis transfer interaction and two-dimensional spin fluctuation into account.
- OSTI ID:
- 323405
- Report Number(s):
- CONF-971201--; ISBN 1-55899-399-1
- Country of Publication:
- United States
- Language:
- English
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