Electronic Phase Separation in Manganite Superlattices

ORAL

Abstract

For manganite superlattices, it has been known that the interfacial effect can give rise to strikingly new physical properties. In this work, we investigate the influence of the superlattice periodicity on electronic phase separation (EPS) phenomena in manganites. We combine magnetic force microscopy (MFM) studies and model calculations to study the n-dependence of EPS of the (La5/8Ca3/8MnO3)2n/(Pr5/8Ca3/8MnO3)n superlattices, and found that the EPS length scale depends sensitively on n. Magnetic and transport measurements also indicate that the physical properties change non-monotonically with increasing n, reaching a minimum at n ~ 6 or 7 for both the Curie temperature and the metal-insulator transition temperature. With increasing n over 7, the physical properties of the superlattice are governed by those of the La5/8Ca3/8MnO3 and the Pr5/8Ca3/8MnO3 layers.

*This work was supported by National Key Research and Development Program of China (2016YFA0300701, 2016YFA0300702), National Basic Research Program of China (973 Program) (2014CB921104); National Natural Science Foundation of China (11504053); Shanghai Municipal Natural Science Foundation (14JC1400500, 1

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Presenters

  • Yinyan Zhu

    • Fudan Univ

Authors

  • Yinyan Zhu

    • Fudan Univ

  • Hao Liu

    • Fudan Univ
    • Department of Physics, Fudan University

  • Tian Miao

    • Fudan Univ
    • State Key Laboratory of Surface Physics and Department of Physics, Fudan University
    • Department of Physics, Fudan University

  • Ling-Fang Lin

    • Southeast University
    • School of Physics, Southeast University

  • Yimei Zhu

    • Condensed Matter Physcis and Materials Science Departement, Brookhaven National Laboratory
    • Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science, Brookhaven National Laboratory
    • Brookhaven Natl Lab
    • Brookhaven National Lab
    • Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory
    • Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory
    • Condensed Matter Physics & Materials Science Department, Brookhaven National Laboratory

  • Hanxuan Lin

    • Fudan Univ
    • State Key Laboratory of Surface Physics and Department of Physics, Fudan University
    • Department of Physics, Fudan University

  • Wenbin Wang

    • Fudan Univ

  • Shuai Dong

    • School of physics, Southeast University
    • Southeast University
    • School of Physics, Southeast University

  • Lifeng Yin

    • Fudan Univ
    • State Key Laboratory of Surface Physics and Department of Physics, Fudan University
    • Department of Physics, Fudan University

  • Jian Shen

    • Fudan Univ.
    • Fudan Univ
    • State Key Laboratory of Surface Physics and Department of Physics, Fudan University
    • Department of Physics, Fudan University