Magnetoresistance in La{sub 1{minus}{ital x}}Sr{sub {ital x}}CoO{sub 3} for 0.05{le}{ital x}{le}0.25
Journal Article
·
· Physical Review, B: Condensed Matter
- Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794-3800 (United States)
- Department of Applied Science, Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
The dc resistivity, magnetoresistance, and magnetic susceptibility of La{sub 1{minus}{ital x}}Sr{sub {ital x}}CoO{sub 3} compounds have been investigated in the temperature range of 4{endash}300 K for magnetic fields up to 7 T. In the doping range studied (0.05{le}{ital x}{le}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. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Brookhaven National Laboratory
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 279790
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 13 Vol. 53; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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