论文标题
假蛋白介导的原子尺度涡旋及其在单层石墨烯中的量子干扰
Pseudospin-mediated Atomic-scale Vortices and Their Quantum Interferences in Monolayer Graphene
论文作者
论文摘要
涡旋是一种普遍且重要的现象，已经闻名了几个世纪。但是，为原子极限创建涡旋仍然难以捉摸，因为支撑涡流的特征长度通常比原子量表大得多。最近，证明了由石墨烯的单个碳缺陷引起的间隔散射导致缺陷周围的封闭路径上的相位绕期。在此信中，我们在这封信中证明了石墨烯A和B sublattices处的单个碳缺陷，可被视为分别具有角度矩的伪源性原子尺度涡旋，分别为斜向动量。相互作用涡流的量子干扰测量表明，涡流相互取消，导致总角动量为零。 = | B |案例，它们显示出骨料的手性和角动量，类似于| a |中多数的单个涡流不等于| b |情况，其中| a | （| b |）是具有角动量L = +2（L = -2）的涡流数。
Vortex is a universal and significant phenomenon that has been known for centuries. However, creating vortices to the atomic limit has remained elusive because that the characteristic length to support a vortex is usually much larger than the atomic scale. Very recently, it was demonstrated that intervalley scattering induced by the single carbon defect of graphene leads to phase winding over a closed path surrounding the defect. Motivated by this, we demonstrate, in this Letter, that the single carbon defects at A and B sublattices of graphene can be regarded as pseudospin-mediated atomic-scale vortices with angular momenta l = +2 and -2, respectively. The quantum interferences measurements of the interacting vortices indicate that the vortices cancel each other, resulting in zero total angular momentum, in the |A| = |B| case, and they show aggregate chirality and angular momenta similar to a single vortex of the majority in the |A| not equal to |B| case, where |A| (|B|) is the number of vortices with angular momenta l = +2 (l = -2).
