论文标题
cr $ _2 $ _2 $ _2 $ _6 $ _6 $ van der waals磁性晶体
Short-range Crystalline Order-Tuned Conductivity in Cr$_2$Si$_2$Te$_6$ van der Waals Magnetic Crystals
论文作者
论文摘要
二维磁性材料（2DMM）对于关于2D长距离磁性的性质的研究以及未来的Spintronic设备的性质很重要。特别感兴趣的是2DMM，可以通过电传导来操纵旋转。 cr $ _2 $ si $ _2 $ te $ _6 $以几层晶体展示磁性订单，其大带隙会抑制电子传导。在这里，我们表明，缺陷诱导的短距离晶体订单cr $ _2 $ _2 $ _2 $ _2 $ _6 $ _6 $在0.6 nm以下的长度比例$ _6 $诱导的频带间隙大大降低了频段隙和强大的半导体行为，降低到2 K，转向10 GPA以上的金属转向金属。我们的结果将有助于设计2DMM的导电状态，并要求对去角质超薄晶体中电子结构进行自旋分辨测量。
Two-dimensional magnetic materials (2DMM) are significant for studies on the nature of 2D long range magnetic order but also for future spintronic devices. Of particular interest are 2DMM where spins can be manipulated by electrical conduction. Whereas Cr$_2$Si$_2$Te$_6$ exhibits magnetic order in few-layer crystals, its large band gap inhibits electronic conduction. Here we show that the defect-induced short-range crystal order in Cr$_2$Si$_2$Te$_6$ on the length scale below 0.6 nm induces substantially reduced band gap and robust semiconducting behavior down to 2 K that turns to metallic above 10 GPa. Our results will be helpful to design conducting state in 2DMM and call for spin-resolved measurement of the electronic structure in exfoliated ultrathin crystals.
