论文标题
在二维半导体中对单叠液的原子尺度操纵
Atomic-scale Manipulation of Single-Polaron in a Two-Dimensional Semiconductor
论文作者
论文摘要
北极子是一种源自局部晶格失真的多余载体衍生的复合准颗粒，在理论上和实验上已经对其进行了数十年的广泛研究。但是，到目前为止，仍未实现原子级的创建和对真实空间中单两极的操纵，这排除了对极性物质及其应用的原子理解。本文中，使用扫描隧道显微镜，我们成功地在单层二维半导体COCL2中创建了单个极性。结合第一原理计算，分别揭示了两种稳定的极性构型，分别以对顶部和空心位点为中心。值得注意的是，从创建，擦除到过渡的一系列操作可以准确地在单个极性子上实现。我们的结果铺平了理解原子水平上极性物理的方式，并且在2D半导体中轻松控制单个极性子可能会为包括数据存储（数据存储）打开2D偏极的门。
Polaron is a composite quasiparticle derived from an excess carrier trapped by local lattice distortion, and it has been studied extensively for decades both theoretically and experimentally. However, atomic-scale creation and manipulation of single-polarons in real space have still not been achieved so far, which precludes the atomistic understanding of the properties of polarons as well as their applications. Herein, using scanning tunneling microscopy, we succeeded to create single polarons in a monolayer two-dimensional semiconductor, CoCl2. Combined with first-principles calculations, two stable polaron configurations, centered at on-top and hollow sites, respectively, have been revealed. Remarkably, a series of manipulation progresses, from creation, erasure to transition, can be accurately implemented on individual polarons. Our results pave the way to understand the polaronic physics at atomic level, and the easy control of single polarons in 2D semiconductor may open the door to 2D polaronics including the data storage.
