標題: Conductive tail-to-tail domain walls in epitaxial BiFeO3 films
作者: Jin, Yaming
Xiao, Shuyu
Yang, Jan-Chi
Zhang, Junting
Lu, Xiaomei
Chu, Ying-Hao
Cheong, S. -W.
Li, Jiangyu
Kan, Yi
Yue, Chen
Li, Yang
Ju, Changcheng
Huang, Fengzhen
Zhu, Jinsong
材料科學與工程學系
Department of Materials Science and Engineering
公開日期: 20-Aug-2018
摘要: The complex conductive behavior of ferroelectric domain walls is attracting more and more attention for their potential application as an independent nanoelectronic component. For the (001) epitaxial BiFeO3 films, we find that the domain wall conductivity varies among 71 degrees domain walls, with tail-to-tail (T-T) domain walls more conductive than head-to-head (H-H) and head-to-tail (H-T) ones. Furthermore, it is observed that most of the conductive areas are composed of two parallel lines around the T-T domain walls. These experimental results can be well simulated by our theoretical model based on the polarization configuration and a tunneling mechanism. Our work will help to understand the mechanism of domain wall conductance in ferroelectric materials and further promote the usage of domain walls in advanced nano-devices. Published by AIP Publishing.
URI: http://dx.doi.org/10.1063/1.5045721
http://hdl.handle.net/11536/148048
ISSN: 0003-6951
DOI: 10.1063/1.5045721
期刊: APPLIED PHYSICS LETTERS
Volume: 113
Appears in Collections:Articles