LaAlO3SrTiO3界面导电性的近场成像
Received:February 10, 2017  Revised:April 25, 2017  点此下载全文
引用本文:成龙,王冬利,戴思远,严跃冬,范晓东,魏来明,曾长淦.LaAlO3SrTiO3界面导电性的近场成像[J].Journal of Infrared and Millimeter Waves,2017,36(5):534~538
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Author NameAffiliationE-mail
CHENG Long Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China dragoncl@mail.ustc.edu.cn 
WANG Dong-Li Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China  
DAI Si-Yuan Department of Physics, The University of California at San Diego siyuandai1991@gmail.com 
YAN Yue-Dong Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China  
FAN Xiao-Dong Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China  
WEI Lai-Ming Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China  
ZENG Chang-Gan Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China cgzeng@ustc.edu.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目),国家重点基础研究发展计划(973计划),中科院战略性先导科技专项(B类),中央高校基本科研基金
中文摘要:铝酸镧/钛酸锶(LaALO3/SrTiO3)异质界面被发现具有二维导电性并呈现出其他一些有趣的呈展现象.而此前, LaAlO3/SrTiO3异质界面的导电性主要都是通过电学方法进行表征.这里作者首次提出利用散射式扫描近场光学显微镜 (s-SNOM) 对LaAlO3/SrTiO3界面的导电性进行空间成像, 这为研究过渡金属氧化物异质界面体系的物理现象提供了一个新的手段.
中文关键词:过渡金属氧化物异质界面,LaAlO3/SrTiO3,散射式扫描近场光学显微镜
 
Near-field imaging of theLaAlO3SrTiO3 interfacial conductivity
Abstract:The LaAlO3/SrTiO3 heterointerface has been discovered to show two-dimensional interfacial conductivity and other intriguing emergent phenomena. Its interfacial conductivity was mainly characterized by electric methods previously. Here the authors present for the first time that scattering-type scanning near-field optical microscopy (s-SNOM) can be employed to spatially image the conductivity of the buried LaAlO3/SrTiO3 interface, providing a new means to study the physics of transition metal oxide heterointerface systems.
keywords:transition metal oxide heterointerface, LaAlO3/SrTiO3, s-SNOM
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