LaAlO3SrTiO3界面导电性的近场成像
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中国科学技术大学 合肥微尺度物质科学国家实验室,中国科学技术大学 合肥微尺度物质科学国家实验室,美国加州大学圣迭戈分校物理系,中国科学技术大学 合肥微尺度物质科学国家实验室,中国科学技术大学 合肥微尺度物质科学国家实验室,中国科学技术大学 合肥微尺度物质科学国家实验室,中国科学技术大学 合肥微尺度物质科学国家实验室

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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


Near-field imaging of theLaAlO3SrTiO3 interfacial conductivity
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Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China,Department of Physics, The University of California at San Diego,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China,Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China

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    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.

    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.

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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].红外与毫米波学报,2017,36(5):534~538]. CHENG Long, WANG Dong-Li, DAI Si-Yuan, YAN Yue-Dong, FAN Xiao-Dong, WEI Lai-Ming, ZENG Chang-Gan. Near-field imaging of theLaAlO3SrTiO3 interfacial conductivity[J]. J. Infrared Millim. Waves,2017,36(5):534~538.]

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  • 收稿日期:2017-02-10
  • 最后修改日期:2017-04-25
  • 录用日期:2017-04-27
  • 在线发布日期: 2017-11-29
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