Magnetoresistance in La(1-x)SrxCoO3 for 0.05 - x - 0.25

Details Magnetoresistance in La(1-x)SrxCoO3 for 0.05 - x - 0.25 Magnetoresistance in La(1-x)SrxCoO3 for 0.05 - x - 0.25

1996-09-27

arxiv.org/abs/cond-mat/9609274v1

Phys. Rev. B, Vol 53, p. 8207 (1996)

Physics

Condensed Matter

4 pages, 3 figures. Also available at http://buckminster.physics.sunysb.edu/papers/pubrece.htm

Scientific paper

10.1103/PhysRevB.53.8207

The dc resistivity, magnetoresistance and magnetic susceptibility of La(1-x)SrxCoO3 compounds have been investigated in the temperature range of 4K to 300K for magnetic fields up to 7 T. In the doping range studied (0.05 - x - 0.25) the electronic properties of the material exhibit a crossover from semiconducting to metallic behavior. The magnetoresistance is highest in the semiconducting state. A correlation was found between the energy gap determined from the dc conductivity and the energy scale identified from neutron scattering data. The results are interpreted in terms of a double exchange model.

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