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arXiv · 2607.02848

Crystal structure and basic properties of dirhenate quantum materials

Danrui Ni·Xianghan Xu·Stephen Zhang·N. P. Ong·Sanfeng Wu·R. J. Cava
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Abstract

The anhydrous divalent 3d-metal dirhenate quantum materials, M(ReO$_4$)$_2$,were synthesized using solid-state methods for M = Mn through Zn. Previously unreported Mg(ReO4)2 is also described. Their layered crystal structures, which feature an in-plane triangular lattice of M$^{2+}$, were refined using single crystal X-ray diffraction, and their optical absorption and several other physical properties were characterized. Their magnetism and heat capacity reveal long-range magnetic order at low temperatures in many of the M(ReO$_4$)$_2$ phases. Notably, many of these ordered states are sensitive to applied magnetic fields and can be readily suppressed by relatively small fields, suggesting competing magnetic interactions in a low-dimensional framework, which appear worthy of further study.

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Danrui Ni, Xianghan Xu, Stephen Zhang, N. P. Ong, Sanfeng Wu, R. J. Cava. 2026-07-03. Crystal structure and basic properties of dirhenate quantum materials. https://arxiv.org/abs/2607.02848

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