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

氧化还原活性配位聚合物中磁和电子相关性的交叉控制

• 批准号: 18J20896
• 负责人: 黄 柏融
• 金额: $ 1.41万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2018
• 资助国家: 日本
• 起止时间: 2018-04-25 至 2021-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18J20896/
• 关键词: chirality; spin spiral; perovskite; noncentrosymmetry; photogalvanic effect; lead iodides; Spin-orbit coupling; bulk photovoltaic effect

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.

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。

项目成果

Strong electronic influence of equatorial ligands on frontier orbitals in paddlewheel dichromium(ii,ii) complexes

赤道配体对叶轮二铬(ii,ii)配合物中前沿轨道的强电子影响

• DOI: 10.1039/c8dt04347g
• 发表时间: 2019
• 期刊: Dalton Transactions
• 影响因子: 4
• 作者: Huang Po-Jung;Natori Yoshiki;Kitagawa Yasutaka;Sekine Yoshihiro;Kosaka Wataru;Miyasaka Hitoshi
• 通讯作者: Miyasaka Hitoshi

クリーンエネルギー

清洁能源

• 发表时间: 2021
• 作者: 中村芳明，坂根駿也

Experimental and Theoretical Studies on Frontier Orbitals of Carboxylate-bridged dichromium(II,II) complexes.

羧酸桥联二铬(II,II)配合物前沿轨道的实验和理论研究。

• 发表时间: 2018
• 作者: Po-Jung Huang;Yoshiki Natori;Yasutaka Kitagawa;Yoshihiro Sekine;Wataru Kosaka;Kouji Taniguchi;Hitoshi Miyasaka
• 通讯作者: Hitoshi Miyasaka

Control of the zero-bias photocurrent direction induced by bulk-photovoltaic-effect and the polarity-chirality coupling in two-dimensional lead(II) iodide perovskites.

二维碘化铅（II）钙钛矿中体光伏效应和极性手性耦合引起的零偏置光电流方向的控制。

• 发表时间: 2019
• 作者: Po-Jung Huang;Kouji Taniguchi;Hitoshi Miyasaka
• 通讯作者: Hitoshi Miyasaka

Control of the zero-bias photocurrent direction induced by bulk-photovoltaic-effect and the polarity-chirality coupling in two-dimensional lead(II) iodide perovskites

二维碘化铅钙钛矿中体光伏效应和极性手性耦合引起的零偏置光电流方向的控制

• 发表时间: 2019
• 作者: Huang Po-Jung;Taniguchi Kouji;Miyasaka Hitoshi
• 通讯作者: Miyasaka Hitoshi