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Magnetic order in GdBiPt studied by x-ray resonant magnetic scattering

TitleMagnetic order in GdBiPt studied by x-ray resonant magnetic scattering
Publication TypeJournal Article
Year of Publication2011
AuthorsKreyssig A, Kim MG, Kim JW, Pratt DK, Sauerbrei SM, March SD, Tesdall GR, Bud'ko SL, Canfield PC, McQueeney RJ, Goldman AI
Journal TitlePhysical Review B
Volume84
Pages220408
Date Published12
Type of ArticleArticle
ISBN Number1098-0121
Accession NumberWOS:000298555800002
Keywordsbi2te3, cebipt, field, phase, single dirac cone, surface, topological insulators, YBBIPT
Abstract

Rare-earth (R) half-Heusler compounds RBiPt exhibit a wide spectrum of interesting ground states. We have employed x-ray resonant magnetic scattering to elucidate the microscopic details of the magnetic structure in GdBiPt below T(N) = 8.5 K. Experiments at the Gd L(2) absorption edge show that the Gd moments order in an antiferromagnetic stacking along the cubic diagonal [111] direction, satisfying one of the requirements for an antiferromagnetic topological insulator as proposed previously, where both time-reversal symmetry and lattice translational symmetry are broken, but their product is conserved.
DOI10.1103/PhysRevB.84.220408
Alternate JournalPhys. Rev. B