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, Ying Hao Chu

Research output: Contribution to journalArticle

65 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)1530-1534
Number of pages5
JournalAdvanced Materials
Volume23
Issue number13
DOIs
Publication statusPublished - 2011 Apr 5
Externally publishedYes

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Keywords

  • BiFeO
  • domain walls
  • electronic structure
  • polarization discontinuity
  • scanning tunneling microscopy (STM)

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Chiu, Y. P., Chen, Y. T., Huang, B. C., Shih, M. C., Yang, J. C., He, Q., Liang, C. W., Seidel, J., Chen, Y. C., Ramesh, R., & Chu, Y. H. (2011). Atomic-scale evolution of local electronic structure across multiferroic domain walls. Advanced Materials, 23(13), 1530-1534. https://doi.org/10.1002/adma.201004143