Katsura Hosho, Nagaosa Naoto, Balatsky Alexander V
Department of Applied Physics, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
Phys Rev Lett. 2005 Jul 29;95(5):057205. doi: 10.1103/PhysRevLett.95.057205. Epub 2005 Jul 28.
A new mechanism of the magnetoelectric effect based on the spin supercurrent is theoretically presented in terms of a microscopic electronic model for noncollinear magnets. The electric polarization P(ij) produced between the two magnetic moments S(i) and S(j) is given by P proportional e(ij) X (S(i) X S(j)) with e(ij) being the unit vector connecting the sites i and j. Applications to the spiral spin structure and the gauge theoretical interpretation are discussed.
基于自旋超流的磁电效应新机制，从非共线磁体的微观电子模型理论上进行了阐述。两个磁矩S(i)和S(j)之间产生的电极化P(ij)由P ∝ e(ij)×(S(i)×S(j))给出，其中e(ij)是连接格点i和j的单位向量。讨论了其在螺旋自旋结构中的应用以及规范理论解释。
