Elementary excitations in the cyclic molecular nanomagnet Cr8

Details Elementary excitations in the cyclic molecular nanomagnet Cr8 Elementary excitations in the cyclic molecular nanomagnet Cr8

2003-10-16

arxiv.org/abs/cond-mat/0310397v1

Phys. Rev. Lett. 91, 237202, 2003

Physics

Condensed Matter

4 pages, 4 figures, RevTex4, to appear in PRL

Scientific paper

10.1103/PhysRevLett.91.237202

Combining recent and new inelastic neutron scattering data for the molecular cyclic cluster Cr8 produces a deep understanding of the low lying excitations in bipartite antiferromagnetic Heisenberg rings. The existence of the L-band, the lowest rotational band, and the E-band, essentially spin wave excitations, is confirmed spectroscopically. The different significance of these excitations and their physical nature is clearly established by high-energy and Q-dependence data.

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