Effects of stoichiometry in single crystals of strongly correlated systems
ORAL · Invited
Abstract
Single crystals allow the study of intrinsic anisotropic properties of materials without the grain boundaries that are present in polycrystalline materials. Different single crystal growth techniques have their own advantages; however, the high-temperature flux growth technique allows one to obtain single crystals with relative ease and little expense, provided the liquidus line for the system in question is accessible. The binary diagrams that show us the extent of such liquidus lines, line compounds (stoichiometric compounds), and compounds with width of formation (nonstoichiometric compounds) are widely studied and are available. However, minute details of ternary phase diagrams are not readily available, given their complexity, and it is sometimes not known beforehand if the ternary compound has exact or varied stoichiometry. Here, we will present the effect of stoichiometry on the physical properties of two ternary compounds: a Weyl semimetal and a strongly correlated antiferromagnet.
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Publication:1. H. Hodovanets, C. J. Eckberg, P. Y. Zavalij, H. Kim, W.-C. Lin, M. Zic, D. J. Campbell, J. S. Higgins, and J. Paglione, Single-crystal investigation of the proposed type-II Weyl semimetal CeAlGe, Phys. Rev. B 98, 245132 (2018) 2. H. Hodovanets , C. J. Eckberg, D. J. Campbell , Y. Eo, P. Y. Zavalij , P. Piccoli , T. Metz, H. Kim , J. S. Higgins, and J. Paglione, Anomalous symmetry breaking in the Weyl semimetal CeAlGe, Phys. Rev. B 106, 235102 (2022) 3. H. Hodovanets, H. Kim, T. Metz, Y. Nakajima, C. J. Eckberg, K. Wang, J. Yong, S. R. Saha, J. Higgins, D. Graf, N. Butch, T. Vojta, J. Paglione, Magnetic field-tuned magnetic order and metamagnetic criticality in non-stoichiometric CeAuBi2, arXiv:2510.23778, submitted to Phys. Rev. B.
