Elementary excitations in the cyclic molecular nanomagnet Cr8 -: art. no. 237202

被引：85

作者：

Waldmann, O

Guidi, T

Carretta, S

Mondelli, C

Dearden, AL

机构：

[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[2] Univ Politecn Marche, Ist Nazl Fis Mat, I-60131 Ancona, Italy

[3] Univ Parma, Dipartimento Fis, Ist Nazl Fis Mat, I-43100 Parma, Italy

[4] Inst Max Von Laue Paul Langevin, Ist Nazl Fis Mat, F-38042 Grenoble, France

[5] Univ Manchester, Dept Chem, Manchester M13 9PL, Lancs, England

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.91.237202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Combining recent and new inelastic neutron scattering data for the molecular cyclic cluster Cr-8 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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页数：4

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