Volume 97, Number 6, March 2012
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||16 March 2012|
Magnetoresistance, noise properties and the Koshino-Taylor effect in the quasi-1D oxide KRu4O8
Laboratoire CRISMAT, UMR 6508 du CNRS, ENSICAEN et Université de Caen - 6 Bd Maréchal Juin, F-14050 Caen 4, France, EU
2 Graduate School of Pure and Applied Sciences, University of Tsukuba - Ibaraki 305-8571, Japan
3 Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), University of Tsukuba Ibaraki 305-8571, Japan
4 PRESTO, Japan Science and Technology Agency - Saitama 332-0012, Japan
Accepted: 16 February 2012
The low-temperature electronic and galvanomagnetic transport properties of the low-dimensional oxide KRu4O8 are experimentally considered. A quadratic temperature variation of the resistivity is observed to be proportional to the residual resistivity. It shows the role of inelastic electron scattering against impurities, i.e. a large Koshino-Taylor effect, rather than a consequence of strong electronic correlations. In the same temperature range, the Kohler rule is not fulfilled. The resistance noise increases also sharply, possibly due to a strong coupling of carriers with lattice fluctuations in this low-dimensional compound.
PACS: 72.15.Gd – Galvanomagnetic and other magnetotransport effects / 72.70.+m – Noise processes and phenomena / 75.47.-m – Magnetotransport phenomena; materials for magnetotransport
© EPLA, 2012
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