Anisotropic transport properties in the phase-separated La0.67Ca0.33MnO3/NdGaO3 (001) films

被引：0
作者：
张洪瑞 [1 ]
刘渊博 [1 ]
王拴虎 [2 ]
洪德顺 [1 ]
吴文彬 [3 ]
孙继荣 [1 ]
机构：
[1] Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences
[2] Shanxi Key Laboratory of Condensed Matter Structures and Properties, School of Science, Northwestern Polytechnical University
[3] Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China and High Magnetic Field Laboratory,Chinese Academy of Sciences
来源：
Chinese Physics B | 2016年 / 25卷 / 07期
基金：
中国国家自然科学基金;
关键词：
electronic transport; magnetic field; electric currents; light illuminations;
D O I：
暂无
中图分类号：
O484.1 [薄膜的生长、结构和外延];
学科分类号：
080501 ; 1406 ;
摘要：
The anisotropic transport property was investigated in a phase separation La0.67Ca0.33MnO3(LCMO) film grown on(001)-oriented Nd GaO3(NGO) substrate. It was found that the resistivity along the b-axis is much higher than that along the a-axis. Two resistivity peaks were observed in the temperature dependent measurement along the b-axis, one located at 91 K and the other centered at 165 K. Moreover, we also studied the response of the resistivities along the two axes to various electric currents, magnetic fields, and light illuminations. The resistivities along the two axes are sensitive to the magnetic field. However, the electric current and light illumination can influence the resistivity along the b-axis obviously, but have little effect on the resistivity along the a-axis. Based on these results, we believe that an anisotropicstrain-controlled MnO6octahedra shear-mode deformation may provide a mechanism of conduction filaments paths along the a-axis, which leads to the anisotropic transport property.
引用
收藏
页码：405 / 410
页数：6
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  • [1] Elastically driven anisotropic percolation in electronic phase-separated manganites
    Ward, T. Z.
    Budai, J. D.
    Gai, Z.
    Tischler, J. Z.
    Yin, Lifeng
    Shen, J.
    [J]. NATURE PHYSICS, 2009, 5 (12) : 885 - 888
  • [2] Colossal magnetoresistant materials: the key role of phase separation[J] . Elbio Dagotto,Takashi Hotta,Adriana Moreo.Physics Reports . 2001 (1)
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