Structure and relevant dimension of the Heisenberg model and applications to spin rings

Autor(en): Barwinkel, K
Schmidt, HJ
Schnack, J 
Stichwörter: CLUSTERS; diagonalization; Heisenberg model; IRON(III) IONS; magnon stares; Materials Science; Materials Science, Multidisciplinary; Physics; Physics, Condensed Matter; relevant dimension; spin ring
Erscheinungsdatum: 2000
Herausgeber: ELSEVIER SCIENCE BV
Journal: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volumen: 212
Ausgabe: 1-2
Startseite: 240
Seitenende: 250
Zusammenfassung: 
For the diagonalization of the Hamilton matrix in the Heisenberg model relevant dimensions are determined depending on the applicable symmetries. Results an presented, birth, by general formulae in closed Form and by the respective numbers for a variety of special systems. In the case of cyclic symmetry, diagonalizations for Heisenberg spin rings are performed with the use of so-called magnon states. Analytically solvable cases of small spin rings are singled out and evaluated. (C) 2000 Elsevier Science B.V. All rights reserved.
ISSN: 03048853
DOI: 10.1016/S0304-8853(99)00579-X

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