Spin dynamics in the spin-gap system CaV4O9 studied using muon-spin relaxation

T Jestädt, R I Bewley, S J Blundell, W Hayes, Brendon W Lovett, F L Pratt, R C C Ward

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Abstract

We report a muon-spin relaxation study of the two-dimensional spin-gap system CaV4O9. We find that the form of the muon-spin relaxation is strongly temperature dependent and attribute this behaviour to the presence of a spin gap. At temperatures below 30 K a root-exponential behaviour is seen for the muon-spin relaxation function, which can be attributed to defect spins. At temperatures above 160 K we see the onset of muon hopping.

Original languageEnglish
Pages (from-to)L259-L263
Number of pages5
JournalJournal of Physics: Condensed Matter
Volume10
Issue number15
Publication statusPublished - 20 Apr 1998

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