標題: Mapping Band Alignment across Complex Oxide Heterointerfaces
作者: Huang, Bo-Chao
Chiu, Ya-Ping
Huang, Po-Cheng
Wang, Wen-Ching
Vu Thanh Tra
Yang, Jan-Chi
He, Qing
Lin, Jiunn-Yuan
Chang, Chia-Seng
Chu, Ying-Hao
材料科學與工程學系
物理研究所
Department of Materials Science and Engineering
Institute of Physics
公開日期: 12-Dec-2012
摘要: In this study, direct observation of the evolution of electronic structures across complex oxide interfaces has been revealed in the LaAlO3/SrTiO3 model system using cross-sectional scanning tunneling microscopy and spectroscopy. The conduction and valence band structures across the LaAlO3/SrTiO3 interface are spatially resolved at the atomic level by measuring the local density of states. This study directly maps out the electronic reconstructions and a built-in electric field in the polar LaAlO3 layer. Results also clearly reveal the band bending and the notched band structure in the SrTiO3 adjacent to the interface. DOI: 10.1103/PhysRevLett.109.246807
URI: http://dx.doi.org/10.1103/PhysRevLett.109.246807
http://hdl.handle.net/11536/20831
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.109.246807
期刊: PHYSICAL REVIEW LETTERS
Volume: 109
Issue: 24
起始頁: 0
結束頁: 0
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