Antiferromagnetic materials can be the suitable functional elements for designing of future spin based electronic devices, circumventing the use of conventional ferromagnetic materials and spin-orbit coupled systems. In the present work first time we put forward the underlying physical mechanism, to the best of our knowledge, to generate polarized spin current through a magnetic material having zero net magnetization. Our proposal is substantiated by considering a 2D geometry which is composed of several concentric 1D rings where neighboring rings are mutually connected with each other. The misalignment of up and down spin bands, which is the primary requirement to have finite spin polarization, is described analytically and then several aspects of spin polarization are studied numerically. Finally, we discuss experimental realization of the proposed magnetic quantum system. Our analysis can be utilized to any other complicated magnetic geometries, and may open up a new platform for future spintronic applications.

中文翻译：

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零净磁化强度的样品能否产生极化自旋电流？

反铁磁材料可以成为设计未来基于自旋的电子设备的合适功能元件，绕过传统铁磁材料和自旋轨道耦合系统的使用。在目前的工作中，我们首次提出了潜在的物理机制，据我们所知，通过具有零净磁化强度的磁性材料产生极化自旋电流。我们的提议通过考虑由几个同心 1D 环组成的 2D 几何结构得到证实，其中相邻的环相互连接。上和下自旋带的未对准是具有有限自旋极化的主要要求，被分析描述，然后自旋极化的几个方面进行了数值研究。最后，我们讨论了所提出的磁量子系统的实验实现。我们的分析可用于任何其他复杂的磁几何结构，并可能为未来的自旋电子应用开辟一个新平台。