Microwave nonreciprocity of magnon excitations in the noncentrosymmetric antiferromagnet Ba2MnGe2O7
Microwave nonreciprocity of magnon excitations in the noncentrosymmetric antiferromagnet Ba2MnGe2O7
复制标题
非中心对称反铁磁体 Ba2MnGe2O7 中磁振子激发的微波非互易性
DOI：
10.1103/physrevb.98.064416
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发表时间：
2018
影响因子：
3.7
通讯作者：
and Y. Onose
中科院分区：
文献类型：
--
作者：
Y. Iguchi;Y. Nii;M. Kawano;H. Murakawa;N. Hanasaki;and Y. Onose
我们研究了非中心对称反铁磁体的微波非互易性。观察到了交错反铁磁体的传统自旋波理论所期望的磁振子模。通过与理论的比较，得到了交换作用和磁各向异性的大小。其中一种模式的微波非互易性被识别出来。微波非互易的相对大小可以用自旋波理论和久保公式来解释。
We have investigated the microwave nonreciprocity for a noncentrosymmetric antiferromagnet. The magnon modes expected by the conventional spin wave theory for staggered antiferromagnets are certainly observed. The magnitudes of exchange interaction and magnetic anisotropy are obtained by the comparison with the theory. The microwave nonreciprocity is identified for one of these modes. The relative magnitude of microwave nonreciprocity can be explained with the use of spin wave theory and Kubo formula.