Current conservation and ratio rules in magnetic metals with Coulomb repulsion

Details Current conservation and ratio rules in magnetic metals with Coulomb repulsion Current conservation and ratio rules in magnetic metals with Coulomb repulsion

2011-12-28

arxiv.org/abs/1112.6036v1

Physics

Condensed Matter

Superconductivity

14 pages, uses axodraw

Scientific paper

From general considerations of spin-symmetry breaking associated with (anti-)ferromagnetism in metallic systems with Coulomb repulsion, we obtain interesting and simple all-order rules involving the ratios of the densities of states. These are exact for ferromagnetism under reasonable conditions, and nearly exact for anti-ferromagnetism. In the case of ferromagnetism, the comparison with the available experimental and theoretical numbers yields favourable results.

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