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Condensed Matter > Strongly Correlated Electrons

arXiv:1809.04687 (cond-mat)
[Submitted on 12 Sep 2018 (v1), last revised 1 Nov 2018 (this version, v3)]

Title:Low-Temperature and Dynamic Magnetism of Highly Frustrated 5d2 Li4MgOsO6 Polymorphs in Comparison with 5d3 Li3Mg2OsO6

Authors:Gia T. Tran, Phuong-Hieu T. Nguyen, Charles J. Bloed, Michael E. Evans, Jamie A. Anczarski, William P. Martin, Jefferson Toro, Demetrios V. Papakostas, James Beare, Murray N. Wilson, John E. Greedan, Graeme M. Luke, Thomas Gredig, Jeremy P. Carlo, Shahab Derakhshan
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Abstract:Geometric magnetic frustration (GMF) has attracted substantial interest due to the exotic physics and rich phase diagrams revealed by the cancellation of normally-dominant magnetic interactions, giving impetus for the search for novel frustrated systems, most often based on antiferromagnetic correlations between magnetic ions decorating triangular or tetrahedral lattices. We report here low-temperature magnetic susceptibility and muon spin relaxation results on Li4MgOsO6 and Li3Mg2OsO6, members of the A5BO6 "rock salt ordered" family of frustrated materials. In Li3Mg2OsO6 we find spin freezing below 12K. In Li4MgOsO6, which can crystallize into either orthorhombic Fddd or monoclinic C2/m crystal symmetries depending on synthesis conditions, we find magnetism consistent with glassy-like behavior dominating below 2K, with partial ordering and evidence for dynamics at somewhat higher temperatures.
Comments: 5 pages, 5 figures
Subjects: Strongly Correlated Electrons (cond-mat.str-el)
Cite as: arXiv:1809.04687 [cond-mat.str-el]
  (or arXiv:1809.04687v3 [cond-mat.str-el] for this version)
  https://doi.org/10.48550/arXiv.1809.04687
Journal reference: Phys. Rev. B 98, 184401 (2018)
Related DOI: https://doi.org/10.1103/PhysRevB.98.184401

Submission history

From: Jeremy Carlo [view email]
[v1] Wed, 12 Sep 2018 21:44:29 UTC (1,541 KB)
[v2] Sun, 16 Sep 2018 23:42:16 UTC (1,541 KB)
[v3] Thu, 1 Nov 2018 15:18:08 UTC (1,542 KB)
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