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arXiv · 1805.08750

Non-reciprocal magnons in non-centrosymmetric MnSi

Tobias Weber·Johannes Waizner·Gregory S. Tucker·Lukas Beddrich·Markos Skoulatos·Robert Georgii·Andreas Bauer·Christian Pfleiderer·Markus Garst·Peter Böni
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Abstract

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 $S(q, E, μ_0 H_{int})$ with respect to flipping either the direction of the applied magnetic field $μ_0 H_{int}$, the reduced momentum transfer $q$, or the energy transfer $E$.

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Tobias Weber, Johannes Waizner, Gregory S. Tucker, Lukas Beddrich, Markos Skoulatos, Robert Georgii, Andreas Bauer, Christian Pfleiderer, Markus Garst, Peter Böni. 2018-10-12. Non-reciprocal magnons in non-centrosymmetric MnSi. https://doi.org/10.1063/1.5041036

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