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SUMMARY:Scaling behaviour of the skyrmions lattices in Cu2OSeO3 single cry
 stals from small angle neutron scattering
DTSTART;VALUE=DATE-TIME:20211125T073400Z
DTEND;VALUE=DATE-TIME:20211125T073500Z
DTSTAMP;VALUE=DATE-TIME:20260814T122710Z
UID:indico-contribution-4231@events01.synchrotron.org.au
DESCRIPTION:Speakers: Jorge Arturo Sauceda Flores (School of Physics\, Uni
 versity of New South Wales\, Sydney 2052\, Australia)\nSkyrmions are topol
 ogically protected spin vortices in the nanometre scale that behave like p
 articles. In chiral crystals\, competing magnetic interactions may induce 
 2D skyrmion lattices [1-2]. In the multiferroic insulator Cu$_2$OSeO$_3$\,
  the skyrmion lattice responds to electric/magnetic fields suggesting appl
 ications in data storage [3]. These applications crucially depend on the s
 tability conditions of the skyrmion phase. Notably\, Cu$_2$OSeO$_3$ is the
  only material in which the appearance of two different skyrmion phases ha
 s been reported in its phase diagram. However\, the quantum mechanisms of 
 these phases and their thermodynamic connection are still under debate [4-
 6]. Hence\, we used Small Angle Neutron Scattering and Lorentz Transmissio
 n Electron Microscopy to study the skyrmion stabilisation in single crysta
 ls of Cu$_2$OSeO$_3$ [7]. In this work\, we report the field\, temperature
 \, and sample alignment dependence of the scaling behaviour of skyrmions a
 s an order parameter for the emergence of the two skyrmion phases.\n\n[1] 
 S. Muehlbauer et al.\, Science 323\, 915 (2009)\n[2] S. Seki\, X. Z. Yu\, 
 S. Ihiwata\, and Y. Tokura\, Science 336\, 198 (2009)\n[3] A. Fert\, N. Re
 yren\, V. Cros\, Nat. Rev. Mats. 2\, 01731 (2017)\n[4] A. Chacon\, L. Hein
 en et al.\, Nat. Phys. 14\, 936-941 (2018)\n[5] F. Qian\, L. J. Bannenberg
  et al.\, Sci. Adv. 4\, eaat7323 (2018)\n[6] L. J. Bannenberg\, H. Wilhelm
  et al.\, npj Quantum Mater. 4\, 11 (2019)\n[7] M.-G. Han\, et al.\, Sci. 
 Adv. 6\, eaax2138 (2020)\n\nhttps://events01.synchrotron.org.au/event/146/
 contributions/4231/
LOCATION:Online
URL:https://events01.synchrotron.org.au/event/146/contributions/4231/
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