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Atomic-scale evolution of local electronic structure across multiferroic domain walls
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Atomic-scale evolution of local electronic structure across multiferroic domain walls

Ya-Ping Chiu, Yu-Ting Chen, Bo-Chao Huang, Min-Chuan Shih, Jan-Chi Yang, Qing He, Chen-Wei Liang, Jan Seidel, Yi-Chun Chen, Ramamoorthy Ramesh, …
Advanced Materials, 卷.23(13), 頁碼.1530-1534
04/2011
DOI: https://doi.org/10.1002/adma.201004143
PMID: 21449056

摘要

BiFeO3 domain walls electronic structure polarization discontinuity scanning tunneling microscopy (STM) Materials Science (all) Mechanics of Materials Mechanical Engineering
Direct evidence of the electronic configurations across domain walls in BiFeO 3 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.

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