Crossover of angular dependent magnetoresistance with the metal-insulator transition in colossal magnetoresistive manganite films

Yunzhong Chen, J.R. Sun, T.Y. Zhao, J. Wang, Z.H. Wang, B.G. Shen, Nini Pryds

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    Abstract

    The temperature and magnetic field dependence of angular dependent magnetoresistance (AMR) along two orthogonal directions ([100] and [01]) was investigated in a charge-orbital-ordered Sm0.5Ca0.5MnO3 (SCMO) film grown on (011)-oriented SrTiO3 substrates. A dramatic decrease of AMR magnitude in both directions was observed with the appearance of magnetic-field-induced metal-insulator transition, which further led to a sign crossover in the AMR effect. The AMR crossover may give a direct evidence of the drastic modification of electronic structure or possible orbital reconstruction with the magnetic-destruction of charge/orbital ordering in SCMO films. ©2009 American Institute of Physics
    Original languageEnglish
    JournalApplied Physics Letters
    Volume95
    Issue number13
    Pages (from-to)132506
    ISSN0003-6951
    DOIs
    Publication statusPublished - 2009

    Bibliographical note

    Copyright (2009) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    Keywords

    • Magnetic refrigeration
    • Fuel Cells and hydrogen

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