论文标题
在石墨烯上单层MOS2中的磁性镜子双边界进行调制的近野筛选
Modulated Kondo screening along magnetic mirror twin boundaries in monolayer MoS2 on graphene
论文作者
论文摘要
当电子浴筛选出半充满杂质水平的磁矩时，在费米能量上出现了多体共振。最初引入的这种临界效应在过去几十年中在许多量子系统中已经实现了散装磁合金的异常电阻率行为，例如量子点，量子点触点，纳米线，单分子晶体管，重型液体晶格，重型液体晶格，直到附着的单个ATOM。在这里，我们描述了一个独特的近野系统，该系统使我们能够在较大的近托温度范围内通过杂质水平和临床共振组成的光谱函数以及它们的空间调制。我们的实验性丘多系统基于MOS2晶界内的离散半填充量子限制状态，并结合数值重新归一化组的计算，使我们能够测试Anderson模型的预测能力，这是对Kondo物理学的显微镜理解的基础。
A many-body resonance emerges at the Fermi energy when an electron bath screens the magnetic moment of a half-filled impurity level. This Kondo effect, originally introduced to explain the abnormal resistivity behavior in bulk magnetic alloys, has been realized in many quantum systems over the past decades, such as quantum dots, quantum point contacts, nanowires, single-molecule transistors, heavy-fermion lattices, down to adsorbed single atoms. Here we describe a unique Kondo system which allows us to experimentally resolve the spectral function consisting of impurity levels and Kondo resonance in a large Kondo temperature range, as well as their spatial modulation. Our experimental Kondo system, based on a discrete half-filled quantum confined state within a MoS2 grain boundary, in conjunction with numerical renormalization group calculations, enables us to test the predictive power of the Anderson model which is the basis of the microscopic understanding of Kondo physics.
