journal article·2017-05-01Open access

Unsaturated magnetoconductance of epitaxial La0.7Sr0.3MnO3 thin films in pulsed magnetic fields up to 60 T

Wei Niu, Xuefeng Wang, Ming Gao, Zhengcai Xia, Jun Du, Yuefeng Nie, Fengqi Song, Yongbing Xu, Rong Zhang

AIP Advances· Volume 7· Issue 5

Abstract

We report on the temperature and field dependence of resistance of La0.7Sr0.3MnO3 thin films over a wide temperature range and in pulsed magnetic fields up to 60 T. The epitaxial La0.7Sr0.3MnO3 thin films were deposited by laser molecular beam epitaxy. High magnetic field magnetoresistance curves were fitted by the Brillouin function, which indicated the existence of magnetically polarized regions and the underlying hopping mechanism. The unsaturated magnetoconductance was the most striking finding observed in pulsed magnetic fields up to 60 T. These observations can deepen the fundamental understanding of the colossal magnetoresistance in manganites with strong correlation of transport properties and magnetic ordering.
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Research context

OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Electronic and Structural Properties of Oxides · Advanced Condensed Matter Physics

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Affiliations

Nanjing University 1 National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and School of Electronic Science and Engineering, , Nanjing 210093, China

Huazhong University of Science and Technology 2 Wuhan National High Magnetic Field Center, , Wuhan 430074, China

Nanjing University 3 National Laboratory of Solid State Microstructures, Collaborative Innovation Center of Advanced Microstructures, and School of Physics, , Nanjing 210093, China

Nanjing University 4 College of Engineering and Applied Sciences, , Nanjing 210093, China

Funding

National Key Projects for Basic Research of China · National Natural Science Foundation of China

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