Spin transport is a key process in the operation of spin-based devices that has been the focus of spintronics research for the last two decades. Conductive materials, such as semiconductors and metals, in which the spin transport relies on electron diffusion, have been employed as the channels for spin transport in most studies. Due to the absence of conduction electrons, the potential to be a spin channel has long been neglected for insulators. However, since the demonstration of spin transmission through a ferromagnetic insulator, it was realized that insulators with magnetic ordering can also serve as channels for spin transport. Here, the recent progress of spin transport in antiferromagnetic insulators is briefly described with an introduction to the experimental techniques. The observations regarding the temperature dependence of spin transmission, spin current switching and the negative spin Hall magnetoresistance are discussed. We also include the challenges for developing the functionality of antiferromagnetic insulators as well as the unresolved problems from the experimental observations.

自旋传输是自旋设备运行中的关键过程，在过去的二十年中一直是自旋电子学研究的重点。在大多数研究中，自旋传输依赖于电子扩散的导电材料，例如半导体和金属，已被用作自旋传输的通道。由于不存在导电电子，对于绝缘子，成为自旋沟道的电势早已被忽略。但是，由于演示了通过铁磁绝缘子的自旋传输，因此已经认识到，具有磁性排序的绝缘子也可以用作自旋传输的通道。在此，简要介绍了反铁磁绝缘子中自旋输运的最新进展，并介绍了实验技术。讨论了有关自旋传输，自旋电流切换和负自旋霍尔磁阻的温度依赖性的观察结果。我们还包括开发反铁磁绝缘子的功能所面临的挑战，以及实验观察中尚未解决的问题。