ESR of the quasi-two-dimensional antiferromagnet CuCrO 2 with a triangular lattice
ESR of the quasi-two-dimensional antiferromagnet CuCrO 2 with a triangular lattice
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三角晶格准二维反铁磁体 CuCrO 2 的 ESR
DOI：
10.1103/physrevb.88.144403
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发表时间：
2013
影响因子：
3.7
通讯作者：
A. Pimenov
中科院分区：
文献类型：
--
作者：
A. M. Vasiliev;L. A. Prozorova;L. E. Svistov;V. Tsurkan;V. Dziom;A. Shuvaev;Anna Pimenov;A. Pimenov
利用电子自旋共振技术研究了具有弱畸变三角晶格的准二维反铁磁体CuCrO的磁结构。在摆线自旋结构的框架中，它是由两个平行和垂直于自旋平面的磁化率（和）和双轴晶场各向异性定义的，在低温下的CuCrO的共振频率和激发条件进行了很好的描述。与计算结果相一致，本征模的性质在自旋翻转跃迁时发生了剧烈的变化。观察到的模式的分裂可以很好地归因于来自不同域的共振。CuCrO中的畴结构可以通过在磁场中退火来控制。
Using the electron-spin-resonance technique we investigate the magnetic structure of CuCrO, a quasi-two-dimensional antiferromagnet with a weakly distorted triangular lattice. Resonance frequencies and the excitation conditions in CuCrOat low temperatures are well described in the frame of cycloidal spin structure, which is defined by two susceptibilities parallel and perpendicular to the spin plane (and) and by a biaxial crystal-field anisotropy. In agreement with the calculations, the character of the eigenmodes changes drastically at the spin-flop transition. The splitting of the observed modes can be well attributed to the resonances from different domains. The domain structure in CuCrOcan be controlled by annealing of the sample in a magnetic field.