Electronic and transport properties of disordered transition-metal alloys

✍ Scribed by D. Ködderitzsch; S. Lowitzer; J. B. Staunton; H. Ebert

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 908 KB
• Volume: 248
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.201147097

✦ Synopsis

Abstract

We present a first‐principles approach to describe electronic transport of disordered alloys in a material specific way. The electronic structure is represented in terms of the relativistic multiple scattering KKR‐Green function. Disorder with possible inclusion of short‐ranged order effects is taken into account by the coherent‐potential approximation or its non‐local formulation. A salient feature of the presented method is the possibility to combine it with a linear response Kubo framework, allowing for a detailed investigation of many transport phenomena which are of immediate relevance for applications in which electrons and/or their spin are manipulated. This is illustrated by several examples and developments, among them the description of the residual resistivity of K‐state‐ and ferromagnetic alloys. Inclusion of relativistic effects by using the Dirac‐formalism represents the basis to deal with the anomalous Hall effect and to derive a relativistic spin‐projection scheme for currents.