Fragile Antiferromagnetism in the Heavy-Fermion Compound YbBiPt

Published

May 8, 2014

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 ξ_b 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 ξ_b 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

Pub Type

Journals

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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 April 19, 2024)