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Magnetotransport properties of BaRuO 3 : Observation of two scattering rates

Author(s): Ying, Y.A.; Liu, Ying; He, Tao; Cava, Robert Joseph

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Abstract: We report results of low-temperature magnetotransport and Hall measurements on single crystals of four-layered hexagonal (4H) and nine-layered rhombohedral (9R) BaRuO 3 that provide insight into the structure-property relationships of BaRuO 3 polymorphs. We found that 4H BaRuO 3 possesses Fermi-liquid behavior down to the lowest temperature (T) of our measurements, 1.8 K. On the other hand, 9R BaRuO 3 was found to show a crossover in the temperature dependence of resistivity around 150 K and the existence of two separate scattering rates at low temperatures. The magnetoresistance in the 9R BaRuO 3 was found to be negative while that in the 4H BaRuO 3 is positive. We propose that local moments may be present in 9R but not in 4H BaRuO 3 , which leads to distinctly different behavior in the two forms. © 2011 American Physical Society.
Publication Date: Dec-2011
Electronic Publication Date: 20-Dec-2011
Citation: Ying, Y.A., Liu, Y., He, T., Cava, R.J. (2011). Magnetotransport properties of BaRuO 3 : Observation of two scattering rates. Physical Review B, 84 (23), 10.1103/PhysRevB.84.233104
DOI: doi:10.1103/PhysRevB.84.233104
ISSN: 1098-0121
EISSN: 1550-235X
Pages: 84.23:233104-1 -233104-4
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review B
Version: Final published version. This is an open access article.
Notes: Physical Review B - Condensed Matter and Materials Physics. Volume 84, Issue 23, 20 December 2011, Article number 233104.

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