TY - JOUR KW - Temperature KW - Microscopy KW - Electron KW - Chemistry KW - Electrons KW - Density functional theory KW - Multiferroics KW - Polarization KW - Domain walls KW - Article KW - Bismuth KW - Electronic properties KW - Scanning tunneling microscopy (STM) KW - Electronic configuration KW - Cross-sectional scanning tunneling microscopies KW - Electronic structure KW - Ferric ion KW - Ferric Compounds KW - Conducting channels KW - Domain boundary KW - Band gaps KW - Scanning KW - Atomic scale KW - BiFeO 3 KW - Built-in potential KW - Local electronic structures KW - Polarization discontinuity KW - Scanning tunneling microscopy (STM) KW - Walls (structural partitions) KW - Scanning Tunneling AU - Y.-P Chiu AU - Y.-T Chen AU - B.-C Huang AU - M.-C Shih AU - J.-C Yang AU - Q He AU - C.-W Liang AU - J Seidel AU - Y.-C Chen AU - Ramamoorthy Ramesh AU - Y.-H Chu AB - 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° domain walls register a remarkable decrease in the bandgap, suggesting a new route to control the local conducting channels within 2 nm. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. BT - Advanced Materials DO - 10.1002/adma.201004143 LA - eng M1 - 13 N1 - cited By 66 N2 - 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° domain walls register a remarkable decrease in the bandgap, suggesting a new route to control the local conducting channels within 2 nm. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. PY - 2011 SP - 1530 EP - 1534 T2 - Advanced Materials TI - Atomic-scale evolution of local electronic structure across multiferroic domain walls VL - 23 SN - 09359648 ER -