论文标题
由自旋循环结构驱动的电子电荷转移
Electronic charge transfer driven by spin cycloidal structure
论文作者
论文摘要
MUON自旋旋转和谐振软X射线散射实验在原型多表演rmn2O5上（R = Y，SM）用于证明局部电位位移是由自旋 - 电流（SC）机制驱动的。通过在配体O离子上观察自旋极化来评估局部电动位移，为此，植入的muons用作非常敏感的探针。我们对YMN2O5的结果提供了证据表明，与Mn离子的载体自旋手性（SI X SJ）成比例增加，形成带有MN旋转的自旋环链的O离子的自旋极化增加。这种关系强烈表明O和Mn离子之间的电荷转移是由SC机制驱动的，SC机制导致伴随O自旋极化的铁电性。
Muon spin rotation and resonant soft X-ray scattering experiments on prototype multiferroics RMn2O5 (R = Y, Sm) are used to demonstrate that the local electric displacements are driven by the spin-current (SC) mechanism. Small local electric displacements were evaluated by observing spin polarization at ligand O ions, for which implanted muons served as an extremely sensitive probe. Our results for YMn2O5 provide evidence that the spin polarization of O ions forming a spin cycloid chain with Mn spins increases in proportion to the vector spin chirality (Si x Sj ) of the Mn ions. This relationship strongly indicates that the charge transfer between O and Mn ions is driven by the SC mechanism, which leads to the ferroelectricity accompanying O spin polarization.
