Investigation of galvano-magnetic properties of transition metal alloy systems using the kubo-greenwood equation

摘要

The galvano-magnetic effects. i.e. the spontaneous magnetoresistance anisotropy (SMA) and the anomalous Hall resistivity (AHR) observed in spontaneously magnetized materials are used since decades in sensor technology (1). Although it has been pointed out more than 40 years ago that these effects are caused by spin-orbit coupling, i.e. are of intrinsic origin and not due to an external magnetic field (2), a thorough the-oretical description for them could be given only very recently by Banhart and Ebert (3). Since then detailed theoretical investigations of the residual (T=0 K) resisitvity properties of disordered Fe_xNi_(1-x) (3), Co_xPd_(1-x) (4) alloys have been performed.