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Spin-Density Wave as a Superposition of Two Magnetic States of Opposite Chirality and Its Implications
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2018-08-01 00:00:00 , DOI: 10.1021/acs.inorgchem.8b01494 Elijah E. Gordon 1 , Shahab Derakhshan 2 , Corey M. Thompson 3 , Myung-Hwan Whangbo 1, 4, 5
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2018-08-01 00:00:00 , DOI: 10.1021/acs.inorgchem.8b01494 Elijah E. Gordon 1 , Shahab Derakhshan 2 , Corey M. Thompson 3 , Myung-Hwan Whangbo 1, 4, 5
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A magnetic solid with weak spin frustration tends to adopt a noncollinear magnetic structure such as a cycloidal structure below a certain temperature and a spin-density wave (SDW) slightly above this temperature. The causes for these observations were explored by studying the magnetic structure of BaYFeO4, which undergoes a SDW and a cycloidal phase transition below 48 and 36 K, respectively, in terms of the density functional theory calculations. We show that a SDW structure arises from a superposition of two magnetic states of opposite chirality, an SDW state precedes a chiral magnetic state because of the lattice relaxation, and whether a SDW is transversal or longitudinal is governed by the magnetic anisotropy of magnetic ions.
中文翻译：
自旋密度波作为两个相反手性磁态的叠加及其蕴涵
具有低自旋沮丧性的磁性固体趋于采用非共线磁性结构，例如在一定温度以下的摆线结构和在该温度稍高的自旋密度波（SDW）。通过研究BaYFeO 4的磁性结构，探索了这些观察的原因，根据密度泛函理论计算，BaYFeO 4的磁性结构分别在48 K和36 K以下经历了SDW和摆线相变。我们表明，SDW结构是由两个具有相反手性的磁态的叠加产生的，由于晶格弛豫，SDW状态先于手性磁态，并且SDW是横向还是纵向受磁离子的磁各向异性支配。
更新日期：2018-08-01
中文翻译：
自旋密度波作为两个相反手性磁态的叠加及其蕴涵
具有低自旋沮丧性的磁性固体趋于采用非共线磁性结构，例如在一定温度以下的摆线结构和在该温度稍高的自旋密度波（SDW）。通过研究BaYFeO 4的磁性结构，探索了这些观察的原因，根据密度泛函理论计算，BaYFeO 4的磁性结构分别在48 K和36 K以下经历了SDW和摆线相变。我们表明，SDW结构是由两个具有相反手性的磁态的叠加产生的，由于晶格弛豫，SDW状态先于手性磁态，并且SDW是横向还是纵向受磁离子的磁各向异性支配。
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