Abstract Two-dimensional (2D) materials comprising of graphene, hexagonal boron nitride (hBN) and transition metal dichalcogenides (TMDs) have revealed fascinating properties in various spintronic architectures. Here, we review spin valve effect in lateral and vertical magnetic junctions incorporating 2D materials as non-magnetic layer between ferromagnetic (FM) electrodes. The magnetic field dependent spin transport properties are studied by measuring non-local resistance (R NL ) and relative magnetoresistance ratio (MR) for lateral and vertical structures, respectively. The review consists of (i) studying spin lifetimes and spin diffusion length thereby exploring the effect of tunneling and transparent contacts in lateral spin valve structures, temperature dependence, gate tunability and contrasting mechanisms of spin relaxation in single layer graphene (SLG) and bilayer graphene (BLG) devices. (ii) Perpendicular spin valve devices are thoroughly investigated thereby studying the role of different 2D materials in vertical spin dynamics. The dependence of spin valve signal on interface quality, temperature and various other parameters is also investigated. Furthermore, the spin reversal in graphene-hBN hybrid system is examined on the basis of Julliere model.

中文翻译：

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基于二维材料界面的自旋电子学磁结的最新进展

摘要 由石墨烯、六方氮化硼 (hBN) 和过渡金属二硫属化物 (TMD) 组成的二维 (2D) 材料在各种自旋电子结构中显示出迷人的特性。在这里，我们回顾了横向和纵向磁性结中的自旋阀效应，其中包含 2D 材料作为铁磁 (FM) 电极之间的非磁性层。通过分别测量横向和垂直结构的非局部电阻 (R NL ) 和相对磁阻比 (MR) 来研究磁场相关的自旋输运特性。审查包括 (i) 研究自旋寿命和自旋扩散长度，从而探索横向自旋阀结构中隧道和透明接触的影响、温度依赖性、单层石墨烯 (SLG) 和双层石墨烯 (BLG) 器件中的栅极可调性和自旋弛豫对比机制。(ii) 彻底研究垂直自旋阀装置，从而研究不同 2D 材料在垂直自旋动力学中的作用。还研究了自旋阀信号对界面质量、温度和各种其他参数的依赖性。此外，基于 Julliere 模型检查了石墨烯-hBN 混合系统中的自旋反转。