Extended skyrmion lattice scattering and long-time memory in the chiral magnet Fe1-xCoxSi
L. J. Bannenberg (TU Delft - RST/Neutron and Photon Methods for Materials)
K. Kakurai (CROSS Tokai, RIKEN Center for Emergent Matter Science (CEMS))
F. Qian (TU Delft - RST/Neutron and Photon Methods for Materials)
E. Lelièvre-Berna (Institut Laue Langevin)
C. D. Dewhurst (Institut Laue Langevin)
Y. Onose (University of Tokyo)
Y. Endoh (RIKEN Center for Emergent Matter Science (CEMS))
Y. Tokura (University of Tokyo, RIKEN Center for Emergent Matter Science (CEMS))
C. Pappas (TU Delft - RST/Neutron and Photon Methods for Materials)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Small angle neutron scattering measurements on a bulk single crystal of the doped chiral magnet Fe1-xCoxSi with x=0.3 reveal a pronounced effect of the magnetic history and cooling rates on the magnetic phase diagram. The extracted phase diagrams are qualitatively different for zero and field cooling and reveal a metastable skyrmion lattice phase outside the A phase for the latter case. These thermodynamically metastable skyrmion lattice correlations coexist with the conical phase and can be enhanced by increasing the cooling rate. They appear in a wide region of the phase diagram at temperatures below the A phase but also at fields considerably smaller or higher than the fields required to stabilize the A phase.