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Magnetic interactions in the metallic phase of the copper oxides

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Identifiers
DOI: 10.1016/0921-4534(89)90775-2

Abstract

Abstract The Cu Cu spin interactions arising from a mediating itinerant oxygen band is derived. Using a formalism similar to that which has been applied to heavy fermion metals, we solve for the concentration dependence of both superexchange and RKKY interactions. The former falls off dramatically with increasing dopant concentration, while the latter undergoes a sign change.

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