Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
Guangdong Provincial Key Laboratory of Semiconductor, Optoelectronic Materials and Intelligent Photonic Systems, School of Science, Harbin Institute of Technology in Shenzhen, 518055, Shenzhen, P. R. China.
Adv Sci (Weinh). 2023 Jun;10(16):e2207506. doi: 10.1002/advs.202207506. Epub 2023 Mar 30.
Growing concentration on the novel information processing technology and low-cost, flexible materials make the spintronics and organic materials appealing for the future interdisciplinary investigations. Organic spintronics, in this context, has arisen and witnessed great advances during the past two decades owing to the continuous innovative exploitation of the charge-contained spin polarized current. Albeit with such inspiring facts, charge-absent spin angular momentum flow, namely pure spin currents (PSCs) are less probed in organic functional solids. In this review, the past exploring journey of PSC phenomenon in organic materials are retrospected, including non-magnetic semiconductors and molecular magnets. Starting with the basic concepts and the generation mechanism for PSC, the representative experimental observations of PSC in the organic-based networks are subsequently demonstrated and summarized, by accompanying explicit discussion over the propagating mechanism of net spin itself in the organic media. Finally, future perspectives on PSC in organic materials are illustrated mainly from the material point of view, including single molecule magnets, complexes for the organic ligands framework as well as the lanthanide metal complexes, organic radicals, and the emerging 2D organic magnets.
对新颖信息处理技术和低成本、灵活材料的日益关注，使得自旋电子学和有机材料在未来的跨学科研究中具有吸引力。在这方面，有机自旋电子学在过去二十年中得到了很大的发展，这要归功于对包含电荷的自旋极化电流的不断创新开发。尽管有这样令人鼓舞的事实，但在有机功能固体中，很少探测到无电荷的自旋角动量流，即纯自旋电流 (PSC)。在这篇综述中，回顾了有机材料中 PSC 现象的探索历程，包括非磁性半导体和分子磁体。从 PSC 的基本概念和产生机制开始，随后展示和总结了在有机基网络中 PSC 的代表性实验观察结果，并通过对有机介质中净自旋本身传播机制的明确讨论进行了伴随性讨论。最后，主要从材料的角度说明了有机材料中 PSC 的未来展望，包括单分子磁体、有机配体框架的配合物以及镧系金属配合物、有机自由基和新兴的二维有机磁体。
