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arXiv · 2008.04239

Electronic and magnetic properties of stoichiometric CeAuBi$_{2}$

M. M. Piva·R. Tartaglia·G. S. Freitas·J. C. Souza·D. S. Christovam·S. M. Thomas·J. B. Leão·W. Ratcliff·J. W. Lynn·C. Lane·J. -X. Zhu·J. D. Thompson·P. F. S. Rosa·C. Adriano·E. Granado·P. G. Pagliuso
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Abstract

We report the electronic and magnetic properties of stoichiometric CeAuBi$_{2}$ single crystals. At ambient pressure, CeAuBi$_{2}$ orders antiferromagnetically below a N\'{e}el temperature ($T_{N}$) of 19 K. Neutron diffraction experiments revealed an antiferromagnetic propagation vector $\hat{\tau} = [0, 0, 1/2]$, which doubles the paramagnetic unit cell along the $c$-axis. At low temperatures several metamagnetic transitions are induced by the application of fields parallel to the $c$-axis, suggesting that the magnetic structure of CeAuBi$_{2}$ changes as a function of field. At low temperatures, a linear positive magnetoresistance may indicate the presence of band crossings near the Fermi level. Finally, the application of external pressure favors the antiferromagnetic state, indicating that the 4$f$ electrons become more localized.

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M. M. Piva, R. Tartaglia, G. S. Freitas, J. C. Souza, D. S. Christovam, S. M. Thomas, J. B. Leão, W. Ratcliff, J. W. Lynn, C. Lane, J. -X. Zhu, J. D. Thompson, P. F. S. Rosa, C. Adriano, E. Granado, P. G. Pagliuso. 2020-08-10. Electronic and magnetic properties of stoichiometric CeAuBi$_{2}$. https://doi.org/10.1103/physrevb.101.214431

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