Optical Stark effect of a local defect on the TiO2 (110) surface

doi:10.1103/PhysRevB.98.081402

	Optical Stark effect of a local defect on the TiO2 (110) surface
	Sun, Lihuan 1,2; Dong, Anning 1,2; Li, Jianmei 1,2; Hao, Dong 1,2; Tang, Xiangqian 1,2; Yan, Shichao3 ; Guo, Yang 1,2; Shan, Xinyan 1,2; Lu, Xinghua 1,2,4
	2018-08-02
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
卷号	98 期号:8
发表状态	已发表
DOI	10.1103/PhysRevB.98.081402
摘要	Probing the optical Stark effect at the single-molecule or atomic scale is crucial for understanding many photoinduced chemical and physical processes on surfaces. Here, we report a study about the optical Stark effect of single atomic defects on a TiO2(110) surface with photoassisted scanning tunneling spectroscopy. When a laser is coupled into the tunneling junction, the midgap state of the OH-O-2 defects changes remarkably in differential conductance spectra. As the laser power gradually increases, the energy of the midgap state shifts away from the Fermi level with an increase in intensity and a broadening of the peak width. The observation can be explained as an optical Stark effect with the Autler-Townes formula. This large optical Stark effect is due to a tip enhancement and a strong dipole moment in the transient charged state during electron tunneling. Our study provides different aspects in exploring electron-photon interactions at the microscopic scale.
收录类别	SCI ; SCIE
语种	英语
资助项目	Beijing Natural Science Foundation[4181003]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000440632900003
出版者	AMER PHYSICAL SOC
WOS关键词	INTRINSIC DEFECTS ; STONE SURFACES ; SINGLE ; PHOTOVOLTAGE ; TIO2(110) ; CO ; ELECTRONS ; OXIDATION ; HYDROGEN ; OXYGEN
原始文献类型	Article
引用统计
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/27606
专题	物质科学与技术学院_PI研究组_颜世超组
通讯作者	Shan, Xinyan
作者单位	1.Chinese Acad Sci, Inst Phys, Betjing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100190, Peoples R China 3.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Topol Quantum Computat, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Sun, Lihuan,Dong, Anning,Li, Jianmei,et al. Optical Stark effect of a local defect on the TiO2 (110) surface[J]. PHYSICAL REVIEW B,2018,98(8).
APA	Sun, Lihuan.,Dong, Anning.,Li, Jianmei.,Hao, Dong.,Tang, Xiangqian.,...&Lu, Xinghua.(2018).Optical Stark effect of a local defect on the TiO2 (110) surface.PHYSICAL REVIEW B,98(8).
MLA	Sun, Lihuan,et al."Optical Stark effect of a local defect on the TiO2 (110) surface".PHYSICAL REVIEW B 98.8(2018).