Selected graphenelike zigzag nanoribbons with chemically functionalized edges: Implications for electronic and magnetic properties

Abstract

It is known that there is a wide class of quasi 2-dimensional graphenelike nanomaterials which in many respects can outperform graphene. So, here in addition to graphene, the attention is directed to stanene (buckled honeycomb structure) and phosphorene (puckered honeycomb structure). It is shown that, depending on the doping, these materials can have magnetically ordered edges. Computed diagrams of magnetic phases illustrate that, on the one hand, n-type doped narrow zigzag nanoribbons of graphene and stanene have antiferromagnetically aligned magnetic moments between the edges. On the other hand, however, in case of phosphorene nanoribbons the zigzag edges can have ferromagnetically aligned magnetic moments for the p-type doping. The edge magnetism critically influences transport properties of the nanoribbons, and if adequately controlled can make them attractive for spintronics. PACS numbers: 72.25.-b, 75.75.-c, 72.80.Vp; 85.75.-d arXiv:1910.00301v1 [cond-mat.mes-hall]

Comparative Studies of Graphene and Phosphorene Zigzag Edge Nanoribbons with Antidots

“…This statement is in line with other theoretical predictions of graphene's half-metallicity, e.g., due to external electric fields [13,14] or chemical edge functionalization . [15]…”

Non-equilibrium spin-transport properties of Co/phosphorene/Co MTJ with non-collinear electrodes under mechanical bending

“…For example, through experiments it has demonstrated that the phosphorene-based spin-valve has a spin relaxation time of up to 4 ns, with a spin relaxation length exceeding 6 mm at room temperature. 35 Besides, the spin-pumping effect in monolayer phosphorene, 32 the gate-voltage-induced giant spin Seebeck effect, 36 and magnetically ordered edges in phosphorene nanoribbons 37 have been proposed in recent theoretical studies. Usually, phosphorene can form a magnetic tunneling junction (MTJ) with magnetic metals, leading to electric spin-injection into phosphorene.…”