Phys. Rev. B 68, 180406(R) (2003) [4 pages]Magnetism in Mn clusters: Role of correlation effects
The effects of the electronic correlations on metallic Mn13 icosahedral clusters are investigated in terms of single-band Hubbard model at half-band filling. The ground state, the spin-flip energy, and the two-body spin-correlation functions are calculated exactly using a Lanczos diagonalization scheme. Our theory provides a natural framework to understand the different density-functional magnetic arrangements for Mn13 clusters, recently predicted in the literature. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.68.180406
DOI:
10.1103/PhysRevB.68.180406
PACS:
75.10.Jm, 36.40.Cg
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