Sawada Keisuke, Ishii Fumiyuki, Saito Mineo, Okada Susumu, Kawai Takazumi
Division of Mathematical and Physical Science, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan.
Nano Lett. 2009 Jan;9(1):269-72. doi: 10.1021/nl8028569.
The zigzag graphene nanoribbon (ZGNR) has an antiferromagnetic property, that is, the relative spin angle theta between the two edges is 180 degrees . By using noncollinear first-principles calculations, we find that the magnetic phase of the ZGNR can be controlled by injecting either electrons or holes: as the carrier density increases, theta continuously decreases from 180 to 0 degrees , which indicates that the net magnetization is possible. Either FET doping or chemical doping is found to be possible.
锯齿形石墨烯纳米带（ZGNR）具有反铁磁特性，即两条边缘之间的相对自旋角θ为180度。通过使用非共线第一性原理计算，我们发现可以通过注入电子或空穴来控制ZGNR的磁相：随着载流子密度增加，θ从180度连续减小到0度，这表明净磁化是可能的。研究发现场效应晶体管（FET）掺杂或化学掺杂都是可行的。
