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Titolo:
An electron spin resonance selection rule for spin-gapped systems
Autore:
Sakai, T; Cepas, O; Ziman, T;
Indirizzi:
Himeji Inst Technol, Fac Sci, Kamigori, Hyogo 6781297, Japan Himeji Inst Technol Kamigori Hyogo Japan 6781297 ri, Hyogo 6781297, Japan Inst Max Von Laue Paul Langevin, F-38042 Grenoble 9, France Inst Max Von Laue Paul Langevin Grenoble France 9 042 Grenoble 9, France CNRS, UMR5 493, Lab Phys & Modelisat Milieux Condenses, Grenoble, France CNRS Grenoble France ys & Modelisat Milieux Condenses, Grenoble, France
Titolo Testata:
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
fascicolo: 11, volume: 69, anno: 2000,
pagine: 3521 - 3524
SICI:
0031-9015(200011)69:11<3521:AESRSR>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUBMILLIMETER-WAVE ESR; CUGEO3; FIELD;
Keywords:
spin gap; ESR; Dzyaloshinskii-Moriya interaction;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
10
Recensione:
Indirizzi per estratti:
Indirizzo: Sakai, T Himeji Inst Technol, Fac Sci, 3-2-1 Kouto, Kamigori, Hyogo 6781297, Japan Himeji Inst Technol 3-2-1 Kouto Kamigori Hyogo Japan 6781297 apan
Citazione:
T. Sakai et al., "An electron spin resonance selection rule for spin-gapped systems", J PHYS JPN, 69(11), 2000, pp. 3521-3524

Abstract

The direct electron spin resonance (ESR) absorption between a singlet ground state and the triplet excited states of spin gap systems is investigated. Such an absorption, which is forbidden by the conservation of the total spin quantum number in isotropic Hamiltonians, is allowed by the Dzyaloshinskii-Moriya interaction. We show a selection rule in the presence of this interaction, using the exact numerical diagonalization of the finite cluster of the quasi-one-dimensional bond-alternating spin system. The selection rule is also modified into a suit;able form in order to interpret recent experimental results on CuGeO3 and NaV2O5.

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Documento generato il 04/12/20 alle ore 16:41:47