1. Chiral Ruthenium Halide Semiconductor with Strong Antiferromagnetic Coupling.
- Author
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Lu, Haolin, He, Tengfei, Wu, Haolin, Qi, Fenglian, Wang, Hebin, Sun, Bing, Shao, Tianyin, Qiao, Tianjiao, Zhang, Hao‐Li, Sun, Dali, Chen, Yongsheng, Tang, Zhiyong, and Long, Guankui
- Subjects
RUTHENIUM ,MAGNETIC circular dichroism ,METAL halides ,MAGNETIC properties ,ANTIFERROMAGNETIC materials ,SEMICONDUCTORS - Abstract
Chiral hybrid organic–inorganic metal halides have attracted wide attention owing to their superior chiroptoelectronic and chirospintronic properties. Here, a new class of chiral lead‐free metal halides, (R/S‐MBA)3Ru2Br9 (MBA = methylbenzylammonium), with unique magnetic properties is reported. (R/S‐MBA)3Ru2Br9 is composed of a surface‐shared octahedron dimer separated by chiral cations and crystallizes into the Sohncke space group of P212121. The crystal structures, chiroptical, magnetic properties, and magnetic circular dichroism of (R/S‐MBA)3Ru2Br9 are systematically investigated. Owing to the strong antiferromagnetic coupling between the Ru atom through bromine bridge in the [Ru2Br9]3− dimer and the weak ferromagnetic coupling between the neighboring [Ru2Br9]3− dimer, (R/S‐MBA)3Ru2Br9 exhibits antiferromagnetic property with Néel temperature at 7 K. Considering the unique magnetic property of ruthenium, together with the rapid progress of antiferromagnetic spintronics and optospintronics recently, this work provides a novel multifunctional lead‐free chiral magnetic candidate toward chiral optoelectronics and antiferromagnetic spintronics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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