E-band excitations in the magnetic Keplerate molecule Fe30

Details E-band excitations in the magnetic Keplerate molecule Fe30 E-band excitations in the magnetic Keplerate molecule Fe30

2006-12-22

arxiv.org/abs/cond-mat/0612580v1

Phys. Rev. B 75, 012415 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 2 figures, REVTEX4, to appear in PRB

Scientific paper

10.1103/PhysRevB.75.012415

The low-temperature excitations in the magnetic Keplerate molecule Fe30 as calculated by linear spin-wave theory (SWT), modified linear SWT, and spin-level mean-field theory (SLMFT) are compared to the recent inelastic neutron scattering results by Garlea et al. [Phys. Rev. B 73, 024414 (2006)]. SLMFT reproduces a part of the experimental spectrum rather well, but not all of it. SWTs yield a fraction of the E-band excitations and hence are not capable of a complete description of the excitation spectrum.

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