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Titolo:
Properties of the first excited state of nonbipartite Heisenberg spin rings
Autore:
Schnack, J;
Indirizzi:
Univ Osnabruck, Fachbereich Phys, D-49069 Osnabruck, Germany Univ Osnabruck Osnabruck Germany D-49069 hys, D-49069 Osnabruck, Germany
Titolo Testata:
PHYSICAL REVIEW B
fascicolo: 22, volume: 62, anno: 2000,
pagine: 14855 - 14859
SICI:
0163-1829(200012)62:22<14855:POTFES>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENTRAPPING ALKALINE IONS; MAGNETIC-ANISOTROPY; CRITICAL-BEHAVIOR; IRON(III) IONS; HALDANE-GAP; CHAIN; CLUSTERS; QUANTUM; ANTIFERROMAGNET; DYNAMICS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
38
Recensione:
Indirizzi per estratti:
Indirizzo: Schnack, J Univ Osnabruck, Fachbereich Phys, Barbarastr 7, D-49069 Osnabruck, Germany Univ Osnabruck Barbarastr 7 Osnabruck Germany D-49069 Germany
Citazione:
J. Schnack, "Properties of the first excited state of nonbipartite Heisenberg spin rings", PHYS REV B, 62(22), 2000, pp. 14855-14859

Abstract

Systematic properties of the first excited state are presented for variousring sizes and spin quantum numbers which are only partly covered by the theorem of Lieb, Schultz, and Mattis. For odd ring sizes the first excited energy eigenvalue shows unexpected degeneracy and related shift quantum numbers. As a byproduct the ground state energy as well as the energy of the first excited state of infinite chains are calculated by extrapolating the properties or only a few, finite, antiferromagnetically coupled Heisenberg rings using the powerful Levin sequence acceleration method.

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Documento generato il 02/07/20 alle ore 22:34:23