A ferrotoroidic candidate with well-separated spin chains

Jun Zhang; Xiancheng Wang; Long Zhou; Gangxiu Liu; Devashibhai T. Adroja; Ivan da Silva; Franz Demmel; Dmitry Khalyavin; Jhuma Sannigrahi; Hari S. Nair; Lei Duan; Jianfa Zhao; Zeng Deng; Runze Yu; Xi Shen; Richeng Yu; Hui Zhao; Jimin Zhao; Youwen Long; Zhiwei Hu; Hong-Ji Lin; Ting-Shan Chan; Chien-Te Chen; Wei Wu; Changqing Jin

arXiv · 2201.08601

A ferrotoroidic candidate with well-separated spin chains

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Abstract

The search of novel quasi one-dimensional (1D) materials is one of the important aspects in the field of material science. Toroidal moment, the order parameter of ferrotoroidic order, can be generated by a head-to-tail configuration of magnetic moment. It has been theoretically proposed that one-dimensional (1D) dimerized and antiferromagnetic-like spin chain hosts ferrotoroidicity and has the toroidal moment composed of only two antiparallel spins. Here, we report a ferrotoroidic candidate of Ba6Cr2S10 with such a theoretical model of spin chain. The structure consists of unique dimerized face-sharing CrS6 octahedral chains along the c axis. An antiferromagnetic-like ordering at ~10 K breaks both space- and time-reversal symmetries and the magnetic point group of mm'2' allows three ferroic orders in Ba6Cr2S10: (anti)ferromagnetic, ferroelectric and ferrotoroidic orders. Our investigation reveals that Ba6Cr2S10 is a rare ferrotoroidic candidate with quasi 1D spin chain, which can be considered as a starting point for the further exploration of the physics and applications of ferrotoroidicity.

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Jun Zhang, Xiancheng Wang, Long Zhou, Gangxiu Liu, Devashibhai T. Adroja, Ivan da Silva, Franz Demmel, Dmitry Khalyavin, Jhuma Sannigrahi, Hari S. Nair, Lei Duan, Jianfa Zhao, Zeng Deng, Runze Yu, Xi Shen, Richeng Yu, Hui Zhao, Jimin Zhao, Youwen Long, Zhiwei Hu, Hong-Ji Lin, Ting-Shan Chan, Chien-Te Chen, Wei Wu, Changqing Jin. 2022-01-21. A ferrotoroidic candidate with well-separated spin chains. https://arxiv.org/abs/2201.08601

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