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Phys. Rev. Lett. 95, 267205 (2005) [4 pages]

Orbital Polarization in Itinerant Magnets

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I. V. Solovyev*
Computational Materials Science Center, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan

Received 4 October 2005; published 22 December 2005

We propose a parameter-free scheme of calculation of the orbital polarization (OP) in metals, which starts with the strong-coupling limit for the screened Coulomb interactions in the random-phase approximation (RPA). For itinerant magnets, RPA can be further improved by restoring the spin polarization of the local-spin-density approximation through the local-field corrections. The OP is then computed as the self-energy correction in the static GW method, which systematically improves the orbital magnetization and the magnetic anisotropy energies in transition-metal and actinide compounds.

© 2005 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.267205
DOI:
10.1103/PhysRevLett.95.267205
PACS:
75.10.Lp, 71.15.Mb, 71.15.Rf, 75.50.−y

*Electronic address: solovyev.igor@nims.go.jp