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

doi:10.1063/1.3691615

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

物理學系

研究成果: Article › 同行評審

39 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	English
文章編號	122903
期刊	Applied Physics Letters
卷	100
發行號	12
DOIs	https://doi.org/10.1063/1.3691615
出版狀態	Published - 2012 3月 19

All Science Journal Classification (ASJC) codes

物理與天文學（雜項）

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10.1063/1.3691615

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title = "Direct observation of ferroelectric polarization-modulated band bending at oxide interfaces",

abstract = "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.",

author = "Huang, {B. C.} and Chen, {Y. T.} and Chiu, {Y. P.} and Huang, {Y. C.} and Yang, {J. C.} and Chen, {Y. C.} and Chu, {Y. H.}",

note = "Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan, for financially supporting this research under Contract Nos. NSC 98-2112-M-110-005-MY3 and NSC-100-2119-M-009-003.",

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AU - Chiu, Y. P.

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AU - Yang, J. C.

AU - Chen, Y. C.

AU - Chu, Y. H.

N1 - Funding Information: The authors would like to thank the National Science Council of the Republic of China, Taiwan, for financially supporting this research under Contract Nos. NSC 98-2112-M-110-005-MY3 and NSC-100-2119-M-009-003.

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AB - 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.

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

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