Orbital magnetization and its effects in spin-chiral ferromagnetic kagome lattice in the general spin-coupling region
Orbital magnetization and its effects in spin-chiral ferromagnetic kagome lattice in the general spin-coupling region
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DOI：
10.1103/physrevb.76.064406
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发表时间：
2007-04
期刊：
影响因子：
--
通讯作者：
Zhigang Wang;Ping Zhang
中科院分区：
文献类型：
--
作者：
Zhigang Wang;Ping Zhang
从理论上研究了具有自旋各向异性的二维Kagom e晶格的轨道磁化及其对一般Hund耦合区域的影响。结果表明，Hund耦合强度和自旋手性对轨道磁化强度有贡献。在改变这两个参数后，发现数学{M}$的两个部分，即常规部分$\mathbf{M}_{c}$和Berry相校正部分$\mathbf{M}_{\Omega}$相互对立。计算了反常能斯特电导，得到了与电子费米能有关的峰谷结构。
The orbital magnetization and its effects on the two-dimensional kagom\'{e} lattice with spin anisotropies included in the general Hund's coupling region have been theoretically studied. The results show that the strength of the Hund's coupling, as well as the spin chirality, contributes to the orbital magnetization $\mathcal{M}$. Upon varying both these parameters, it is found that the two parts of $\mathcal{M}$, i.e., the conventional part $\mathbf{M}_{c}$ and the Berry-phase correction part $\mathbf{M}_{\Omega}$, oppose each other. The anomalous Nernst conductivity is also calculated and a peak-valley structure as a function of the electron Fermi energy is obtained.