DIRECT OBSERVATION OF ELECTRONIC MEAN FREE PATH IN METALLIC SYSTEMS

Conduction electrons injected from a ferromagnet F into a normal metal M can be experimentally distinguished from the intrinsic conduction electrons of M. They contribute to the anomalous Hall conductance in M, which allows a direct observations of their propagation in M. I develop a theory of this effect and apply this new method to quench-condensed In. © 1978 The American Physical Society.