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arXiv · 1107.0993

Long-range crystalline nature of the skyrmion lattice in MnSi

T. Adams·S. Mühlbauer·C. Pfleiderer·F. Jonietz·A. Bauer·A. Neubauer·R. Georgii·P. Böni·U. Keiderling·K. Everschor·M. Garst·A. Rosch
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Abstract

We report small angle neutron scattering of the skyrmion lattice in MnSi using an experimental set-up that minimizes the effects of demagnetizing fields and double scattering. Under these conditions the skyrmion lattice displays resolution-limited Gaussian rocking scans that correspond to a magnetic correlation length in excess of several hundred μm. This is consistent with exceptionally well-defined long-range order. We further establish the existence of higher-order scattering, discriminating parasitic double-scattering with Renninger scans. The field and temperature dependence of the higher-order scattering arises from an interference effect. It is characteristic for the long-range crystalline nature of the skyrmion lattice as shown by simple mean field calculations.

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T. Adams, S. Mühlbauer, C. Pfleiderer, F. Jonietz, A. Bauer, A. Neubauer, R. Georgii, P. Böni, U. Keiderling, K. Everschor, M. Garst, A. Rosch. 2011-07-05. Long-range crystalline nature of the skyrmion lattice in MnSi. https://doi.org/10.1103/physrevlett.107.217206

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