Chiral Ruthenium Halide Semiconductor with Strong Antiferromagnetic Coupling

Author:

Lu Haolin1,He Tengfei12,Wu Haolin1,Qi Fenglian3,Wang Hebin1,Sun Bing4,Shao Tianyin1,Qiao Tianjiao1,Zhang Hao‐Li4,Sun Dali5,Chen Yongsheng2,Tang Zhiyong3,Long Guankui1ORCID

Affiliation:

1. School of Materials Science and Engineering, Tianjin Key Lab for Rare Earth Materials and Applications Smart Sensing Interdisciplinary Science Center Renewable Energy Conversion and Storage Center (RECAST) Nankai University Tianjin 300350 China

2. The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials Institute of Polymer Chemistry Renewable Energy Conversion and Storage Center (RECAST) College of Chemistry Nankai University Tianjin 300071 China

3. Chinese Academy of Science (CAS) Key Laboratory of Nanosystem and Hierarchy Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China

4. State Key Laboratory of Applied Organic Chemistry (SKLAOC) Key Laboratory of Special Function Materials and Structure Design (MOE) College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000 China

5. Department of Physics North Carolina State University Raleigh NC 27695‐8202 USA

Abstract

AbstractChiral 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.

Funder

Fundamental Research Funds for the Central Universities

Higher Education Discipline Innovation Project

Sichuan University

National Natural Science Foundation of China

Publisher

Wiley

Subject

Electrochemistry,Condensed Matter Physics,Biomaterials,Electronic, Optical and Magnetic Materials

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