Spin dynamics and magnetic order in magnetically frustrated Tb2Sn2O7

We report a study of the geometrically frustrated magnetic material Tb2Sn2O7 by the positive muon spin relaxation technique. No signature of a static magnetically ordered state is detected while neutron magnetic reflections are observed in agreement with a published report. This is explained by the...

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Bibliographic Details
Published in:arXiv.org 2006-03
Main Authors: P Dalmas de Reotier, Yaouanc, A, Keller, L, Cervellino, A, Roessli, B, Baines, C, get, A, Vaju, C, Gubbens, P C M, Amato, A, King, P J C
Format: Article
Language:English
Subjects:
Magnetic materials
Magnetic moments
Magnetism
Muon spin relaxation
Muons
Spin dynamics
Spin-lattice relaxation
Variations
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Summary:We report a study of the geometrically frustrated magnetic material Tb2Sn2O7 by the positive muon spin relaxation technique. No signature of a static magnetically ordered state is detected while neutron magnetic reflections are observed in agreement with a published report. This is explained by the dynamical nature of the ground state of Tb2Sn2O7: the Tb3+ magnetic moment characteristic fluctuation time is ~ 10^{-10} s. The strong effect of the magnetic field on the muon spin-lattice relaxation rate at low fields indicates a large field-induced increase of the magnetic density of states of the collective excitations at low energy.
ISSN:2331-8422
DOI:10.48550/arxiv.0603379