期刊
PHYSICAL REVIEW MATERIALS
卷 3, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevMaterials.3.024204
关键词
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资金
- Swiss National Science Foundations (SNSF R' Equip) [206021_163997, 206021_139082]
- Paul Scherrer Institute
- SNSF Sinergia network NanoSkyrmionics [CRSII5-171003]
- Swiss National Science Foundation (SNF) [206021_163997] Funding Source: Swiss National Science Foundation (SNF)
We explore two methods for single-crystal growth of the theoretically proposed magnetic Weyl semimetals RAlGe (R = Pr, Ce), which prove that a floating-zone technique, being both crucible- and flux-free, is crucial to obtain perfectly stoichiometric RAlGe crystals. In contrast, the crystals grown by a flux-growth technique tend to be Al-rich. We further present both structural and elemental analyses, along with bulk magnetization and electrical resistivity data on the crystals prepared by the floating-zone technique. Both systems with the intended 1:1:1 stoichiometry crystallize in the anticipated polar I4(1) md (No. 109) space group, although neither displays the theoretically expected ferromagnetic ground state. Instead PrAlGe displays a spin-glass-like transition below 16 K with an easy c axis and CeAlGe has an easy-ab-plane antiferromagnetic order below 5 K. The grown crystals provide an ideal platform for microscopic studies of the magnetic field-tunable correlation physics involving magnetism and topological Weyl nodes.
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