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Spin dynamics in a weakly itinerant magnet from 29Si NMR in MnSi

Corti, M.
Filibian, M.
Nugroho, A.A.
Carretta, P.
Published in Physical Review. B, Condensed Matter. 2007, vol. 75, p. 115111
Abstract SiNMR spectra and nuclear spin-lattice relaxation rate measurements in MnSi paramagnetic phase are presented. The experimental results are analyzed in the framework of the self-consistent renormalization theory for spin fluctuations, and detailed estimates of microscopic parameters describing the q and frequency dependence of the dynamical spin susceptibility are obtained. It is shown, in the light of a comparison with neutron scattering results, that some early determined parameters need to be revised. Accordingly, also the derivation of Curie-Weiss law within this model should be critically reconsidered.
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Research group Groupe Giamarchi
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CORTI, M. et al. Spin dynamics in a weakly itinerant magnet from 29Si NMR in MnSi. In: Physical Review. B, Condensed Matter, 2007, vol. 75, p. 115111. https://archive-ouverte.unige.ch/unige:35711

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Deposited on : 2014-04-15

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