Nonlinear optical detection of a ferromagnetic state at the single interface of an antiferromagnetic LaMnO 3 / SrMnO 3 double layer
Nonlinear optical detection of a ferromagnetic state at the single interface of an antiferromagnetic LaMnO 3 / SrMnO 3 double layer
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反铁磁 LaMnO 3 / SrMnO 3 双层单界面铁磁态的非线性光学检测
DOI：
10.1103/physrevb.78.212409
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发表时间：
2008
影响因子：
3.7
通讯作者：
K. Miyano
中科院分区：
文献类型：
--
作者：
N. Ogawa;T. Satoh;Y. Ogimoto;K. Miyano
利用非线性磁光克尔旋转，在两种反铁磁钙钛矿锰氧化物LaMnO_{3}$和SrMnO_{3}$的单一界面上发现了铁磁态的出现.样品由每种材料的大约四个晶胞组成，具有相反的堆叠顺序。通过相敏二次谐波检测确定了界面偶极子或所谓的环向矩的存在和方向。在单一界面的多铁性态的表征，和不可忽略的影响表面上的克尔旋转的证明。
Emergence of a ferromagnetic state at the single interface of two antiferromagnetic perovskite manganites, ${\text{LaMnO}}_{3}$ and ${\text{SrMnO}}_{3}$, has been detected with nonlinear magneto-optical Kerr rotation. The samples are composed of approximately four unit cells of each material, with reversed stacking sequence. The existence and orientations of the interface dipole or that of so-called toroidal moment were determined through phase-sensitive second-harmonic detection. Characterization of multiferroic states at the single interfaces, and non-negligible effect of surfaces on the Kerr rotation are demonstrated.