ISSN:
1434-6036
Keywords:
PACS. 71.27.+a Strongly correlated electron systems; heavy fermions - 75.30.Ds Spin waves - 75.20.Hr Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: We discuss the effects of an applied magnetic field on the low-energy excitations in the low temperature phase of Yb4As3. We show also why the magnetic interaction of the Yb3+ 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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510070225
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