Low-energy excitations of Yb4As3 in a magnetic field

Authors
Uimin, G Kudasov, Y Fulde, P Ovchinnikov, A
Citation
G. Uimin et al., Low-energy excitations of Yb4As3 in a magnetic field, EUR PHY J B, 16(2), 2000, pp. 241-244
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
EUROPEAN PHYSICAL JOURNAL B
ISSN journal
14346028 → ACNP
Volume
16
Issue
2
Year of publication
2000
Pages
241 - 244
Database
ISI
SICI code
1434-6028(200007)16:2<241:LEOYIA>2.0.ZU;2-F
Abstract
We discuss the effects of an applied magnetic field on the low-energy excit ations in the low temperature phase of Yb4As3 We show also why the magnetic interaction of the yb(3+) ions is nearly of an isotropic Heisenberg spin-1 /2 type. A small anisotropy due to an intrachain dipolar interaction leads to the opening of a gap when a magnetic field is applied. The model agrees with available experimental data. Simple experiments are suggested in order to further test the present theory.