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

doi:10.1063/1.3240407

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

Chinese Academy of Sciences

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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 language	English
Journal	Applied Physics Letters
Volume	95
Issue number	13
Pages (from-to)	132506
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.3240407
Publication status	Published - 2009

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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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10.1063/1.3240407

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http://link.aip.org/link/?APPLAB/95/132506/1

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

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. {\textcopyright}2009 American Institute of Physics",

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

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.",

year = "2009",

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T1 - Crossover of angular dependent magnetoresistance with the metal-insulator transition in colossal magnetoresistive manganite films

AU - Chen, Yunzhong

AU - Sun, J.R.

AU - Zhao, T.Y.

AU - Wang, J.

AU - Wang, Z.H.

AU - Shen, B.G.

AU - Pryds, Nini

N1 - 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.

PY - 2009

Y1 - 2009

N2 - 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

AB - 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

KW - Magnetic refrigeration

KW - Fuel Cells and hydrogen

KW - Magnetisk køling

KW - Brændselsceller og brint

U2 - 10.1063/1.3240407

DO - 10.1063/1.3240407

M3 - Journal article

SN - 0003-6951

VL - 95

SP - 132506

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 13

ER -

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

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