Orbital magnetization and its effects in spin-chiral ferromagnetic kagome lattice in the general spin-coupling region

Details 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

2008-01-20

arxiv.org/abs/0801.3061v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures

Scientific paper

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.

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