Coherent magnetic diffraction from the uranium M4 edge in the multi-k magnet, USb

Joshua Lim, Elizabeth Blackburn, Guillaume Beutier, Francis Livet, Nicola Magnani, Alessandro Bombardi, Roberto Caciuffo, G. H. Lander

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2 Citations (Scopus)
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Abstract

The slow magnetic dynamics, from seconds to kiloseconds, of the canonical 3-k antiferromagnet USb have been probed, using X-ray photon correlation spectroscopy (XPCS). In this work, XPCS is combined with resonant X-ray diffraction to focus on scattering at an antiferromagnetic Bragg peak. High quality coherent magnetic diffraction patterns were recorded (speckle contrast of ~ 88%) and magnetic domains were observed; the number of domains increases on warming to T* ~ 160 K, where the spin waves soften to zero frequency, and again on warming to TN = 218 K. The intensity auto-correlation, g2(t), is primarily static over 1000 s, with a small dynamical process (change of ~ 0.4%) that increases in rate close to the transitions.
Original languageEnglish
Article number012010
JournalJournal of Physics: Conference Series
Volume519
DOIs
Publication statusPublished - 27 May 2014
EventWorkshop on Resonant Elastic X-ray Scattering in Condensed Matter - Abingdon, United Kingdom
Duration: 15 Jul 201319 Jul 2013

Keywords

  • Condensed matter: electrical
  • magnetic and optical

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