Emergent Intrinsic Ferromagnetism in Two-Dimensional Trigonal Rhodium Oxide.
basic_science · Level V
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- Record sourced from PubMed, PMID 37830516.
- Also identified by DOI 10.1021/acs.nanolett.3c03087.
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Abstract
Two-dimensional (2D) van der Waals single crystals with long-range magnetic order are the precondition and urgent task for developing a 2D spintronics device. In contrast to graphene and transition metal dichalcogenides, the study of 2D single-crystal metal oxides with intrinsic ferromagnetic properties remains a huge challenge. Here, we report a large-size trigonal single-crystal rhodium oxide (SC-Tri-RhO<sub>2</sub>), with crystal parameters of <i>a</i> = <i>b</i> = 3.074 Å, <i>c</i> = 6.116 Å, and a space group of <i>P</i>3̅<i>m</i>1 (164), exhibiting strong ferromagnetism (FM) at a rather high temperature. Furthermore, theoretical calculations suggest that the ferromagnetism in SC-Tri-RhO<sub>2</sub> originates from spin splitting near the Fermi level, and the total magnetic moment is contributed mainly by the Rh atom.