Orbital magnetization and its effect in antiferromagnets on the distorted fcc lattice

Details Orbital magnetization and its effect in antiferromagnets on the distorted fcc lattice Orbital magnetization and its effect in antiferromagnets on the distorted fcc lattice

2007-06-08

arxiv.org/abs/0706.1107v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

18 pages, 6 figures

Scientific paper

10.1103/PhysRevB.76.094406

We study the intrinsic orbital magnetization (OM) in antiferromagnets on the distorted face-centered-cubic lattice. The combined lattice distortion and spin frustration induce nontrivial $k$-space Chern invariant, which turns to result in profound effects on the OM properties. We derive a specific relation between the OM and the Hall conductivity, according to which it is found that the intrinsic OM vanishes when the electron chemical potential lies in the Mott gap. The distinct behavior of the intrinsic OM in the metallic and insulating regions is shown. The Berry phase effects on the thermoelectric transport is also discussed.

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