Abstract
Abstract 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.
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