Chiral fluctuations in MnSi above the Curie temperature measured with polarized inelastic neutron scattering

Details Chiral fluctuations in MnSi above the Curie temperature measured with polarized inelastic neutron scattering Chiral fluctuations in MnSi above the Curie temperature measured with polarized inelastic neutron scattering

2002-05-31

arxiv.org/abs/cond-mat/0205657v1

Physics

Condensed Matter

Strongly Correlated Electrons

Presented at the Strongly Correlated Electron Systems Conference, Krak\'ow 2002

Scientific paper

Using polarized inelastic neutron scattering the antisymmetric part of the dynamical susceptibility in non-centrosymmetric MnSi is determined. The paramagnetic fluctuations are found to be incommensurate with the chemical lattice and to have a chiral character. We show that antisymmetric interactions must be taken into account to properly describe the critical dynamics in MnSi above the Curie temperature. The inelastic neutron data is interpreted within the framework of the SCR-theory, taking into account the Dzyaloshinskii-Moriya interaction.

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