论文标题
具有良好分离旋转链的铁螺母候选者
A ferrotoroidic candidate with well-separated spin chains
论文作者
论文摘要
对新型准一维材料的搜索是材料科学领域的重要方面之一。环螺旋序的顺序参数，可以通过磁矩的头到尾配置生成。从理论上讲，一维（1D）二聚体和抗铁磁样的自旋链宿主的螺质型，并具有仅由两个反平行旋转组成的旋风矩。在这里，我们报告了具有自旋链的理论模型的BA6CR2S10的氟烷类候选者。该结构由沿C轴沿着独特的二聚面CRS6八面体链组成。 〜10 K处的抗磁性秩序均打破了空间和时间反转的对称性，而MM'2'的磁点组允许BA6CR2S10中的三个铁序：（（抗）亚铁磁性，铁电和螺异类药物。我们的研究表明，BA6CR2S10是具有准1D自旋链的罕见的螺母候选候选者，可以将其视为进一步探索亚螺母型物理和应用的起点。
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.
