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Chiral Magnetism: Coupling Static and Dynamic Chirality
Chemistry Letters ( IF 1.6 ) Pub Date : 2021-01-13 , DOI: 10.1246/cl.200840
Katsuya Inoue 1
Affiliation  

The synthesis, structure, magnetic properties and magnetic structure of two molecular chiral magnets and one inorganic chiral magnet are presented. In magnetic crystals belonging to the Sohncke group, which includes the chiral group, the chiral non-collinear spin structure is achieved through Dzyaloshinsky-Moriya interactions in addition to the usual exchange spin interactions and dipole-dipole spin interactions. Experimentally, a chiral helical magnetic (CHM) structure is observed as the ground state in most of this category of uniaxial chiral magnets as a non-collinear spin structure. CHM structure transforms into a chiral spin soliton (CS) magnetic structure in a magnetic field. The (CS) magnetic structure forms a chiral spin soliton lattice (CSL) magnetic structure when the nearest neighbor magnetic interaction is ferromagnetic. Since the CHM and CSL magnetic structures are topologically protected, they are not affected by defects and are therefore extremely stable. A series of studies have revealed that the chiral magnetic structure is perfectly coupled to the non-symmetric crystal structure. It was also found that the CHM and CSL magnetic structures are macroscopic spin-phase coherent states.

中文翻译:

手性磁性:将静态和动态手性耦合

介绍了两种分子手性磁体和一种无机手性磁体的合成,结构,磁性和磁性结构。在属于包括手性基团在内的Sohncke基团的磁性晶体中,除了通常的交换自旋相互作用和偶极-偶极自旋相互作用之外,还通过Dzyaloshinsky-Moriya相互作用获得了手性非共线自旋结构。在实验中,在大多数这类单轴手性磁体中,作为非共线自旋结构,观察到手性螺旋磁性(CHM)结构为基态。CHM结构在磁场中转换为手性自旋孤子(CS)磁性结构。当最邻近的磁性相互作用是铁磁性时,(CS)磁性结构形成手性自旋孤子晶格(CSL)磁性结构。由于CHM和CSL磁性结构在拓扑上受到保护,因此它们不受缺陷影响,因此非常稳定。一系列研究表明,手性磁性结构与非对称晶体结构完美耦合。还发现,CHM和CSL磁性结构是宏观自旋相干态。
更新日期:2021-01-13
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