Unexpected phase locking of magnetic fluctuations in the multi-k magnet USb

Joshua Lim, Elizabeth Blackburn, Nicola Magnani, Arno Hiess, L-P Regnault, R Caciuffo, GH Lander

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3 Citations (Scopus)
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The spin waves in the multi-k antiferromagnet USb soften and become quasielastic well below the antiferromagnetic ordering temperature TN. This occurs without a magnetic or structural transition. It has been suggested that this change is in fact due to dephasing of the different multi-k components: a switch from 3-k to 1-k behavior. In this work, we use inelastic neutron scattering with tridirectional polarization analysis to probe the quasielastic magnetic excitations and reveal that the 3-k structure does not dephase. More surprisingly, the paramagnetic correlations also maintain the same clear phase correlations well above TN (up to at least 1.4TN).
Original languageEnglish
Article number064421
JournalPhysical Review B
Publication statusPublished - 25 Feb 2013


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