Is the magnetic structure of EuCuAs a transverse helix or a collinear antiferromagnet?
EuCuAs hosts magnetically-induced Weyl fermions whose band topology depends on the magnetic structure. In zero field the magnetic structure is either a transverse helix of a collinear antiferromagnet. Our previous unpolarized neutron diffraction measurements on D9 indicate the helix, but the very strong absorption due to Eu makes it difficult to determine Bragg peak intensities accurately. We wish to obtain an independent confirmation of the magnetic structure by spherical neutron polarimetry, which is not affected by sample absorption.
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BOOTHROYD Andrew Timothy; RODRIGUEZ VELAMAZAN Jose Alberto; JIAN-RUI SOH and STUNAULT Anne. (2021). Is the magnetic structure of EuCuAs a transverse helix or a collinear antiferromagnet?. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-54-368
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