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, and A. Rosch
Phys. Rev. Lett. 107, 217206 – Published 18 November 2011

Abstract

We report small angle neutron scattering of the Skyrmion lattice in MnSi using an experimental setup that minimizes the effects of demagnetizing fields and double scattering. Under these conditions, the Skyrmion lattice displays resolution-limited Gaussian rocking peaks that correspond to a magnetic correlation length in excess of several hundred micrometers. 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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  • Received 5 July 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.217206

© 2011 American Physical Society

Authors & Affiliations

T. Adams1, S. Mühlbauer1,2,3, C. Pfleiderer1, F. Jonietz1, A. Bauer1, A. Neubauer1, R. Georgii1,2, P. Böni1, U. Keiderling4, K. Everschor5, M. Garst5, and A. Rosch5

  • 1Physik-Department E21, Technische Universität München, D-85748 Garching, Germany
  • 2Forschungsneutronenquelle Heinz Maier-Leibnitz, Technische Universität München, D-85748 Garching, Germany
  • 3Institut für Festkörperphysik, ETH Zürich, Zürich, Switzerland
  • 4Helmholtz Zentrum Berlin, BENSC, D-14109 Berlin, Germany
  • 5Institute of Theoretical Physics, Universität zu Köln, D-50937 Köln, Germany

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Issue

Vol. 107, Iss. 21 — 18 November 2011

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