Atomic-Scale Evolution of Local Electronic Structure Across Multiferroic Domain Walls

作者：Chiu, Ya-Ping^*; Chen, Yu-Ting; Huang, Bo-Chao; Shih, Min-Chuan; Yang, Jan-Chi; He, Qing; Liang, Chen-Wei; Seidel, Jan; Chen, Yi-Chun; Ramesh, Ramamoorthy; Chu, Ying-Hao

来源：Advanced Materials, 2011, 23(13): 1530-1534.

DOI：10.1002/adma.201004143

• NANOSCALE CONTROL
• BIFEO3 FILMS
• POLARIZATION

Direct evidence of the electronic configurations across domain walls in BiFeO3 is quantitatively characterized by cross-sectional scanning tunneling microscopy. Atomic-scale band evolution and the asymmetrically built-in potential barrier at domain boundaries are demonstrated. The 109 degrees domain walls register a remarkable decrease in the bandgap, suggesting a new route to control the local conducting channels within 2 nm.

• 出版日期2011-4-5
• 单位中山大学