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Electric-Field-Induced Skyrmion Distortion and Giant Lattice Rotation in the Magnetoelectric Insulator Cu2OSeO3

J. S. White, K. Prša, P. Huang, A. A. Omrani, I. Živković, M. Bartkowiak, H. Berger, A. Magrez, J. L. Gavilano, G. Nagy, J. Zang, and H. M. Rønnow
Phys. Rev. Lett. 113, 107203 – Published 4 September 2014
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Abstract

Uniquely in Cu2OSeO3, the Skyrmions, which are topologically protected magnetic spin vortexlike objects, display a magnetoelectric coupling and can be manipulated by externally applied electric (E) fields. Here, we explore the E-field coupling to the magnetoelectric Skyrmion lattice phase, and study the response using neutron scattering. Giant E-field induced rotations of the Skyrmion lattice are achieved that span a range of 25°. Supporting calculations show that an E-field-induced Skyrmion distortion lies behind the lattice rotation. Overall, we present a new approach to Skyrmion control that makes no use of spin-transfer torques due to currents of either electrons or magnons.

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  • Received 28 May 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.107203

© 2014 American Physical Society

Authors & Affiliations

J. S. White1,2,*, K. Prša1, P. Huang1, A. A. Omrani1, I. Živković3, M. Bartkowiak4, H. Berger5, A. Magrez5, J. L. Gavilano2, G. Nagy2, J. Zang6,†, and H. M. Rønnow1,‡

  • 1Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
  • 2Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
  • 3Institute of Physics, Bijenička 46, HR-10000 Zagreb, Croatia
  • 4Laboratory for Developments and Methods, Paul Scherrer Institut, CH-5232 Villigen, Switzerland
  • 5Crystal Growth Facility, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
  • 6Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA

  • *jonathan.white@psi.ch
  • jiadongzang@gmail.com
  • henrik.ronnow@epfl.ch

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Vol. 113, Iss. 10 — 5 September 2014

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