Spin dynamics in the spin-gap system studied using muon-spin relaxation
Th Jestädt; R I Bewley; S J Blundell; W Hayes; B W Lovett; F L Pratt; R C C Ward; Th Jestädt; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; R I Bewley; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; S J Blundell; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; W Hayes; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; B W Lovett; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; F L Pratt; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK; R C C Ward; University of Oxford, Department of Physics, Clarendon Laboratory, Parks Road, Oxford OX1 3PU, UK
Журнал:
Journal of Physics: Condensed Matter
Дата:
1998-04-20
Аннотация:
We report a muon-spin relaxation study of the two-dimensional spin-gap system . 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.
88.77Кб