Magnetic Structure of Yb2Pt2Pb: Ising Moments on the Shastry-Sutherland Lattice

Published

March 22, 2016

Author(s)

W. Miiller, L. S. Wu, M. S. Kim, T. Orvis, J. W. Simonson, M. Gamza, D. M. McNally, C. S. Nelson, G. Ehlers, A. Podlesnyak, Joel Helton, Yang Zhao, Yiming Qiu, John R. Copley, Jeffrey W. Lynn, I. Zaliznyak, M. C. Aronson

Abstract

Neutron diffraction measurements were carried out on single crystals and powders of Yb₂Pt₂Pb, where Yb moments form planes of orthogonal dimers in the frustrated Shastry-Sutherland Lattice (SSL). Yb₂Pt₂Pb orders antiferromagnetically at T_N=2.07 K, and the magnetic structure determined from these measurements features the interleaving of two orthogonal sublatttices into a 5x5x1 magnetic supercell that is based on stripes with moments perpendicular to the dimer bonds, which are along (110) and (-100). Magnetic fields applied along (100) or (-100) suppress the antiferromagnetic peaks from an individual sublattice, but leave the orthogonal sublattice unaffected, evidence for the Ising character of the Yb moments in Yb₂Pt₂Pb. Specific heat, magnetic susceptibility, and electrical resistivity measurements concur with neutron elastic scattering results that the longitudinal crtical fluctions are gapped with Δ}Ε).07 meV.

Citation

Physical Review B

Volume

93

Issue

10

Pub Type

Journals

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Keywords

Shastry-Sutherland Lattice, neutron scattering

Citation

Miiller, W. , Wu, L. , Kim, M. , Orvis, T. , Simonson, J. , Gamza, M. , McNally, D. , Nelson, C. , Ehlers, G. , Podlesnyak, A. , Helton, J. , Zhao, Y. , Qiu, Y. , Copley, J. , Lynn, J. , Zaliznyak, I. and Aronson, M. (2016), Magnetic Structure of Yb₂Pt₂Pb: Ising Moments on the Shastry-Sutherland Lattice, Physical Review B, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917075 (Accessed April 25, 2024)