標題: Interface control of bulk ferroelectric polarization
作者: Yu, P.
Luo, W.
Yi, D.
Zhang, J. X.
Rossell, M. D.
Yang, C. -H.
You, L.
Singh-Bhalla, G.
Yang, S. Y.
He, Q.
Ramasse, Q. M.
Erni, R.
Martin, L. W.
Chu, Y. H.
Pantelides, S. T.
Pennycook, S. J.
Ramesh, R.
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: complex oxide;heterostructure;interface physics;electronic reconstruction;polar discontinuity
公開日期: 19-六月-2012
摘要: The control of material interfaces at the atomic level has led to novel interfacial properties and functionalities. In particular, the study of polar discontinuities at interfaces between complex oxides lies at the frontier of modern condensed matter research. Here we employ a combination of experimental measurements and theoretical calculations to demonstrate the control of a bulk property, namely ferroelectric polarization, of a heteroepitaxial bilayer by precise atomic-scale interface engineering. More specifically, the control is achieved by exploiting the interfacial valence mismatch to influence the electrostatic potential step across the interface, which manifests itself as the biased-voltage in ferroelectric hysteresis loops and determines the ferroelectric state. A broad study of diverse systems comprising different ferroelectrics and conducting perovskite underlayers extends the generality of this phenomenon.
URI: http://hdl.handle.net/11536/16474
ISSN: 0027-8424
期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
Volume: 109
Issue: 25
結束頁: 9710
顯示於類別:期刊論文


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