期刊
NATURE CHEMISTRY
卷 10, 期 10, 页码 1056-1061出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41557-018-0107-7
关键词
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资金
- VILLUM Foundation [15374]
- Danish Research Council for Independent Research [4090-00201]
- MOLSPIN COST action [CA15128]
- National Science Foundation [DMR-1611525]
- Danish National Research Foundation (Center for Materials Crystallography) [DNRF93]
- US Department of Energy, Office of Science, Office of Basic Energy Sciences (Theory FWP) Materials Sciences and Engineering Division [DE-AC02-05CH11231]
- France-Berkeley Fund
- Office of Science, Office of Basic Energy Sciences, of the US Department of Energy [DE-AC02-05CH11231]
- CNRS [06485]
The unique properties of graphene, transition-metal dichalcogenides and other two-dimensional (2D) materials have boosted interest in layered coordination solids. In particular, 2D materials that behave as both conductors and magnets could find applications in quantum magnetoelectronics and spintronics. Here, we report the synthesis of CrCl2(pyrazine)(2), an air-stable layered solid, by reaction of CrCl2 with pyrazine (pyz). This compound displays a ferrimagnetic order below similar to 55 K, reflecting the presence of strong magnetic interactions. Electrical conductivity measurements demonstrate that CrCl2(pyz)(2) reaches a conductivity of 32 ms cm(-1) at room temperature, which operates through a 2D hopping-based transport mechanism. These properties are induced by the redox-activity of the pyrazine ligand, which leads to a smearing of the Cr 3d and pyrazine states. We suggest that the combination of redox-active ligands and reducing paramagnetic metal ions represents a general approach towards tuneable 2D materials that consist of charge-neutral layers and exhibit both long-range magnetic order and high electronic conductivity.
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