Extended skyrmion lattice scattering and long-time memory in the chiral magnet Fe1-xCoxSi

Journal article (2016)

Authors

L.J. Bannenberg RST/Neutron and Positron Methods in Materials - AS
K. Kakurai CROSS Tokai, RIKEN Center for Emergent Matter Science (CEMS)
F. Qian RST/Neutron and Positron Methods in Materials - AS
E Lelievre-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 RST/Neutron and Positron Methods in Materials - AS
Research Group
RST/Neutron and Positron Methods in Materials (AS) (TU Delft)
Copyright: © 2016 L.J. Bannenberg, K. Kakurai, F. Qian, E. Lelièvre-Berna, C. D. Dewhurst, Y. Onose, Y. Endoh, Y Tokura, C. Pappas
DOI
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https://doi.org/10.1103/PhysRevB.94.104406
More Info
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Published Date

06-09-2016

Language

English

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Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Neutron and Positron Methods in Materials

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.