Karina Morgenstern , Nicolas Lorente,and Karl-Heinz Rieder

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Presentation transcript:

Controlled manipulation of single atoms and small molecules using the scanning tunnelling microscope Karina Morgenstern , Nicolas Lorente,and Karl-Heinz Rieder 小组成员：袁伟，芦宏，魏祎雯，赵欣欣，张成龙，王磊，蔡超逸，汪知昌 Phys. Status Solidi B, 1–81 (2013)/DOI 10.1002/pssb.201248392

Advantages of STM: 1. real-space atomic resolution imaging 2.Electronic structure (local density of electronic states ) 3.Investigate physical/chemical properties at atomic level 4.Atomic and molecular manipulation

1. Introduction： Schematic view of an STM

STM work principle

Elastic tunneling Inelastic tunneling

Manipulation： three different parameters for modiﬁcations of surfaces： forces between tip and surface (ii) electrical field between tip and substrate (iii) electron tunnelling current.

Lateral manipulation:

Vertical manipulation:

Manipulation employing the electron current

Diffusion and desorption： Molecule chemistry with the STM Diffusion and desorption：

Rotation：

Bond breaking:

Chemical reaction:

thank you！