Evolution of the surface structures on SrTiO3(110) tuned by Ti or Sr concentration

被引：51
|
作者：
Wang, Zhiming [1 ]
Yang, Fang
Zhang, Zhiqiang
Tang, Yuanyuan
Feng, Jiagui
Wu, Kehui
Guo, Qinlin
Guo, Jiandong
机构：
[1] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
来源：
PHYSICAL REVIEW B | 2011年 / 83卷 / 15期
关键词：
SCANNING-TUNNELING-MICROSCOPY; STRONTIUM-TITANATE; PHOTOELECTRON-SPECTROSCOPY; SRTIO3(001); RECONSTRUCTIONS; SUPERLATTICES; POLARIZATION; TEMPERATURES; OXIDES;
D O I：
10.1103/PhysRevB.83.155453
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The surface structure of the SrTiO3(110) polar surface is studied by scanning tunneling microscopy and x-ray photoelectron spectroscopy. Monophased reconstructions in (5 x 1), (4 x 1), (2 x 8), and (6 x 8) are obtained, respectively, and the evolution between these phases can be tuned reversibly by adjusting the Ar+ sputtering dose or the amount of Sr/Ti evaporation. Upon annealing, the surface reaches the thermodynamic equilibrium that is determined by the metal concentration. The different electronic structures and absorption behaviors of the surface with different reconstructions are investigated.
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页数：9
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