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Fragile Antiferromagnetism in the Heavy-Fermion Compound YbBiPt

Published

Author(s)

B. G. Ueland, A. Kreyssig, K. Prokes, Jeffrey W. Lynn, Leland Harriger, D.K. Pratt, D.K. Singh, T.W. Heitmann, S. Sauerbrei, S.M. Saunders, E. D. Mun, S. L. Bud'Ko, R.J. McQueeney, P. C. Canfield, A. I. Goldman

Abstract

We report results from neutron scattering experiments on single crystals of YbBiPt that demonstrate antiferromagnetic order characterized by a propagation vector τAFM = (1/2,1/2,1/2}), and ordered moments that align along the [1 1 1] direction of the cubic unit cell. We describe the scattering in terms of a two-Gaussin peak fit, which length of ξb approximately equal} 80 A, and a broad component that persists up to Τ approximately equal} 0.7 K and corresponds to antiferromagnetic correlations extending over ξb approximately equal} 20 A. Our results illustrate the fragile magnetic order present in YbBiPt and provide a path forward for microscopic investigations of the ground states and fluctuations associated with the purported quantum critical point in this heavy-fermion compound.
Citation
Physical Review Letters
Volume
89
Issue
18

Keywords

Heavy Fermion, Antiferromagnetic Order, YbBiPt, Neutron Diffraction

Citation

Ueland, B. , Kreyssig, A. , Prokes, K. , Lynn, J. , Harriger, L. , Pratt, D. , Singh, D. , Heitmann, T. , Sauerbrei, S. , Saunders, S. , Mun, E. , Bud'Ko, S. , McQueeney, R. , Canfield, P. and Goldman, A. (2014), Fragile Antiferromagnetism in the Heavy-Fermion Compound YbBiPt, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915264 (Accessed March 3, 2024)
Created May 7, 2014, Updated October 12, 2021