Direct observation of ferroelectric polarization-modulated band bending at oxide interfaces

B. C. Huang, Y. T. Chen, Y. P. Chiu*, Y. C. Huang, J. C. Yang, Y. C. Chen, Y. H. Chu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

42 引文 斯高帕斯(Scopus)

摘要

This study presents a direct visualization of the influences of ferroelectric polarization on the electronic properties of the Schottky contact at the Nb-SrTiO 3/BiFeO 3 hetero-interface using scanning tunneling microscopy and spectroscopy (STM/S). The evolution of the local density of states across the Nb-SrTiO 3/BiFeO 3 interface reveals the interfacial band alignment and the characteristic quantities of the metal/ferroelectric contact. The unique combination of STM and STS in this study delivers an approach to obtain critical information on the interfacial electronic configurations of ferroelectric oxide interfaces and also their variation with ferroelectric polarization switching.

原文英語
文章編號122903
期刊Applied Physics Letters
100
發行號12
DOIs
出版狀態已發佈 - 2012 3月 19
對外發佈

ASJC Scopus subject areas

  • 物理與天文學(雜項)

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