AIP Advances
(Oct 2018)
Non-reciprocal magnons in non-centrosymmetric MnSi
T. Weber,
J. Waizner,
G. S. Tucker,
L. Beddrich,
M. Skoulatos,
R. Georgii,
A. Bauer,
C. Pfleiderer,
M. Garst,
P. Böni
Affiliations
T. Weber
Institut Laue-Langevin (ILL), 71 Avenue des Martyrs, 38000 Grenoble, France
J. Waizner
Institut für Theoretische Physik, Universität zu Köln, Zülpicher Str. 77a, 50937 Köln, Germany
G. S. Tucker
Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut (PSI), CH-5232 Villigen, Switzerland
L. Beddrich
Heinz-Maier-Leibnitz-Zentrum (MLZ), Technische Universität München (TUM), Lichtenbergstr. 1, 85747 Garching, Germany
M. Skoulatos
Heinz-Maier-Leibnitz-Zentrum (MLZ), Technische Universität München (TUM), Lichtenbergstr. 1, 85747 Garching, Germany
R. Georgii
Heinz-Maier-Leibnitz-Zentrum (MLZ), Technische Universität München (TUM), Lichtenbergstr. 1, 85747 Garching, Germany
A. Bauer
Physik-Department, Technische Universität München (TUM), James-Franck-Str. 1, 85748 Garching, Germany
C. Pfleiderer
Physik-Department, Technische Universität München (TUM), James-Franck-Str. 1, 85748 Garching, Germany
M. Garst
Institut für Theoretische Physik, Technische Universität Dresden, D-01062 Dresden, Germany
P. Böni
Physik-Department, Technische Universität München (TUM), James-Franck-Str. 1, 85748 Garching, Germany
DOI
https://doi.org/10.1063/1.5041036
Journal volume & issue
Vol. 8,
no. 10
Abstract
Read online
Using two cold-neutron triple-axis spectrometers we have succeeded in fully mapping out the field-dependent evolution of the non-reciprocal magnon dispersion relations in all magnetic phases of MnSi. The non-reciprocal nature of the dispersion manifests itself in a full asymmetry (non-reciprocity) of the dynamical structure factor Sq,E,μ0Hint with respect to flipping either the direction of the applied magnetic field μ0Hint, the reduced momentum transfer q, or the energy transfer E.
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