Galvanomagnetic properties of disordered Mn semi-Heusler phases with Anderson localisation
Laboratoire L. Néel, CNRS, BP 166 X, 38042 Grenoble, France
2 Institute of Physics, University of Silesia, Uniwersytecka 4, 40007 Katowice, Poland
3 Faculty of Physics and Nuclear Techniques, al. Mickiewicza, 30058 Krakow, Poland
Published online: 15 November 2000
The Anderson localisation has been observed in Heusler-type solid solutions where Mn replaces Ti or V in NiTiSb or CoVSb compounds respectively, due to the atomic and magnetic disorders. The magnetoresistance, Hall effect, thermopower and electron spin resonance of these solutions are investigated. Strong anomalies appear for the concentration range where a carrier localisation occurs; the mobility of carriers is strongly reduced, the magnetoresistance scales with the resistivity and the susceptibility of solid solutions.
PACS: 71.55.Jv – Disordered structures; amorphous and glassy solids / 72.15.Gd – Galvanomagnetic and other magnetotransport effects / 72.15.Jf – Thermoelectric and thermomagnetic effects
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000