Phase separation and enhanced charge-spin coupling near magnetic transitions

Details Phase separation and enhanced charge-spin coupling near magnetic transitions Phase separation and enhanced charge-spin coupling near magnetic transitions

1999-07-13

arxiv.org/abs/cond-mat/9907184v1

Physics

Condensed Matter

Scientific paper

10.1103/PhysRevB.62.391

The generic changes of the electronic compressibility in systems which show magnetic instabilities is studied. It is shown that, when going into the ordered phase, the compressibility is reduced by an amount comparable to the its original value, making charge instabilities also possible. We discuss, within this framework, the tendency towards phase separation of the double exchange systems, the pyrochlores, and other magnetic materials.

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