Due to the reduced spatial dimensions, many intriguing quantum phenomenon arise in two-dimensional (2D) systems, such as graphene, 2D electron gas (2DEG) in semiconductor heterostructures, and the topologically protected surface state of topological insulator (TI). While transport measurements are traditional ways to study the 2D systems, various surface sensitive probes including scanning tunneling microscope (STM) can provide the opportunity to understand in new directions the 2D systems. In this talk, I will present three different types of 2D systems on surfaces: 2D metal1-4, 2D semiconductor5-6, and 2D Kondo lattice7. First, we obtained a 2D metal by growing atomically flat crystalline Aluminum film at the ultimate one monolayer limit on silicon surface, in which the peculiar surface plasmon excitation was investigated. In the next, we probed with atomic resolution the local potential fluctuations in a 2D semiconductor (Si(111)-33-Ga), resulting from the statistical distribution of Si dopants. Finally, we imaged in the real space the Kondo resonance in a 2D Kondo lattice formed by self-assembled O2 molecules, which are paramagnetic, on the Au (110)-12 reconstructed surface. The spatial interplay between the intersite coupling and the onsite Kondo effect was revealed.

References:
1. Y. Jiang et al., Appl. Phys. Lett. 91, 181902 (2007).
2. Y. Jiang et al., Phys. Rev. B 76, 235434 (2007).
3. Y. Jiang et al., Phys. Rev. B 76, 035409 (2007).
4. Z. Yuan, Y. Jiang et al., Phys. Rev. B 83, 165452 (2011).
5. S. Landrock, Y. Jiang et al., Appl. Phys. Lett. 95, 072107 (2009).
6. Y. Jiang et al., Phys. Rev. B 81, 033405 (2010).
7. Y. Jiang et al., Science, in press (2011).

个人简介：
江颖，北京大学量子材料科学中心博士生导师。2003年本科毕业于北京师范大学物理系，2008年在中国科学院物理研究所获理学博士学位。2006年2007年为德国尤里希研究所 (Forschungszentrum Jülich GmbH) 访问学者。2008年到2010年在美国加州大学欧文分校 (UC, Irvine) 从事博士后研究。2010年被聘为北京大学国际量子材料科学中心助理教授、副研究员，中科院物理研究所客座研究员。以第一作者身份在Science, PRB, APL等著名杂志上发表了多篇文章。为Physical Review B，Modern Physics Letters B等杂志审稿人。多次受邀参加国内外学术会议 (包括德国物理学会年会、美国真空学会年会、美国物理学会年会、中国物理学会年会等)。美国物理学会、真空学会会员。中科院物理所表面物理国家重点实验室学术委员会委员。多年来致力于超高空间、时间和能量分辨的扫描探针显微镜系统的研制和开发，研究单分子和低维纳米结构的电、声、光、磁等特性。当前的研究兴趣主要集中在将超快激光引入到扫描隧道显微镜，借助扫描隧道显微镜的超高空间分辨，在亚纳米尺度研究各种非平衡超快动力学行为。