酸化還元活性な配位高分子における磁気・電子相関の交差制御

在成功地观察到手性诱导的二维有机-无机杂化钙钛矿(OIHPS)中光电子学和非中心对称性相结合的体光电效应的基础上，我们利用圆偏振光(CPL)实现了具有非中心对称性的光自旋电子学。结果表明，在手性感生圆环光电流效应(CPGE)下观察到了具有自旋极化的零偏压光电流。这两种现象都被发现与所用有机成分的手性有关。最近在《先进材料》上发表了关于CPGE的工作，此外，我们还通过研究手性引入的铜的二维OIHPS，研究了磁性和非中心对称性的结合，以实现特殊的磁性行为。从测量中发现，在手性溴化铜的基础上，发现了几个涉及自旋螺旋的磁相。这被认为是由于材料没有中心对称性的自旋受挫引起的，因为我们还合成了中心对称的OIHP溴化铜作为对比，它在低温下只显示铁磁性相。我们还测量了氚样品的中子衍射。然而，没有观察到明显的自旋周期。这部作品很快就会出版。

Based on the successuful observation of bulk photovoltaic effect by combining opto-electronics and noncentrosymmetry in chirality-induced two-dimensional organic-inorganic hybrid perovskites (OIHPs), we implemented opto-spintronics with noncentrosymmetry by utilizing circular polarized light (CPL). The results showed the observation of chirality-induced circular photogalvanic effect (CPGE) which produces zero-bias photocurrent with spin polarization under CPL. Both of the phenomena were found dependent on chirality of used organic components. The work about CPGE was published on Advanced Materials very recently.Besides, we worked on the combination of magnetism and noncentrosymmetry for special magnetic behavior by studying chirality-introduced Cu two-dimensional OIHPs. From the measurements, several magnetic phases involving spin spirals were found based on copper bromide with chirality. This is considered to be induced by the spin frustration without centrosymmetry of materials since we also synthesized a centrosymmetric OIHP copper bromide for comparison which shows only ferromagnetic phase at low temperature. We also measured neutron diffraction on deuterated samples. However, no clear period of spin was observed. This work will soon be published.