Disordered Local Moment Picture
The disordered local moment (DLM) picture is a method, in theoretical Solid-state physics, solid state physics, for describing the electronic structure of a Magnetism, magnetic material at a finite temperature, where a probability distribution of sizes and orientations of atomic magnetic moments must be considered. It was pioneered, among others, by Balázs Győrffy, Julie Staunton, Malcolm Stocks, and co-workers. The underlying assumption of the DLM picture is similar to the Born-Oppenheimer approximation for the separation of solution of the ionic and electronic problems in a material. In the disordered local moment picture, it is assumed that 'local' magnetic moments which form around atoms are sufficiently long-lived that the electronic problem can be solved for an assumed, fixed distribution of magnetic moments. Many such distributions can then be averaged over, appropriately weighted by their probabilities, and a description of the paramagnetic state obtained. (A paramagnetic ...
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