Recently, how to induce magnetism for two-dimensional materials have become one of research hot topics. Here, we study geometrical stability and magneto-electronic properties for antimonene nanoribbons doped with low-concentration transition metal(TM) atom (Mn, Fe, Cr and Co). It is found that these structures are stable by the formation energy calculation and molecular dynamics simulation. In particular, results show that these doped nanoribbons possess interesting magnetic phases, such as magnetic half-metal, magnetic half-semiconductor, and bipolar magnetic semiconductor, depending on the type of TM atoms. Furthermore, Mn-doped ribbon based magnetic device is constructed and the spin transport behaviors are investigated in details. The perfect double spin-filtering effect, excellent dual spin diode performance and giant magnetoresistance up to 109% are observed in this device. These findings might make a significant contribution for designing multi-function spintronic devices.

近年来，如何在二维材料上感应磁性已成为研究的热点之一。在这里，我们研究了掺有低浓度过渡金属原子（Mn，Fe，Cr和Co）的锑纳米带的几何稳定性和磁电性能。通过形成能计算和分子动力学模拟发现这些结构是稳定的。特别地，结果表明，取决于TM原子的类型，这些掺杂的纳米带具有有趣的磁性相，例如磁性半金属，磁性半半导体和双极磁性半导体。此外，构建了Mn掺杂的带状磁性器件，并详细研究了自旋传输行为。完美的双重自旋过滤效果，该器件具有出色的双自旋二极管性能和高达109％的巨大磁阻。这些发现可能为设计多功能自旋电子器件做出重大贡献。