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Probing the ground state of through measurements
- Source :
-
Physica B . Apr2009, Vol. 404 Issue 5-7, p686-688. 3p. - Publication Year :
- 2009
-
Abstract
- Abstract: We present data recorded on a newly prepared sample of the geometrically frustrated magnetic material . These data confirm previously published results and clearly show that there is a dynamical component in the ground state. This seems in contrast to the result of the linear spin-wave calculation of A.G. Del Maestro and M.J.P. Gingras which predicts the spin-waves to be gapped over the whole first Brillouin zone with a gap larger than about in temperature scale. The measured high-temperature paramagnetic spin dynamics is understood with a simple model. The conditions for observing a spontaneous magnetic field and a finite relaxation rate at low temperature are discussed in terms of the properties of a function which measures the density of fluctuation modes. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09214526
- Volume :
- 404
- Issue :
- 5-7
- Database :
- Academic Search Index
- Journal :
- Physica B
- Publication Type :
- Academic Journal
- Accession number :
- 37253792
- Full Text :
- https://doi.org/10.1016/j.physb.2008.11.195