Electrical transport properties of heteroepitaxial p-n junction of charge-ordered La_(7/16)Ca_(9/16)MnO_3 and 0.5 wt Nb doped SrTiO_3

Li G.; Huang D.-B.; Jin S.-W.Ma Y.-Q.Li X.-G.

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Electrical transport properties of heteroepitaxial p-n junction of charge-ordered La_(7/16)Ca_(9/16)MnO_3 and 0.5 wt Nb doped SrTiO_3

机译：Electrical transport properties of heteroepitaxial p-n junction of charge-ordered La_(7/16)Ca_(9/16)MnO_3 and 0.5 wt Nb doped SrTiO_3

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摘要

Electrical transport properties of a heteroepitaxial pn junction made of charge-ordered La_(7/16)Ca_(9/16)MnO_3 (LCMO) and 0.5 wt Nb doped SrTiO_3 (SNTO) were studied. The junction displayed highly rectifying currentvoltage characteristics over a temperature range from 85 to 280 K. The slope of the diffusion voltage vs temperature shows two evident changes, which can be respectively associated to the paramagnetic to ferromagnetic and ferromagnetic to antiferromagnetic (charge ordering) magnetic transitions of LCMO. Two distinct electronic transport mechanisms are also discerned around the charge ordering temperature (TCO); thermally assisted tunneling at temperatures lower than TCO and diffusion/recombination at higher temperatures.

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来源
《Solid State Communications》 |2010年第38期|1737-1740|共4页
作者
Li G.; Huang D.-B.; Jin S.-W.Ma Y.-Q.Li X.-G.;
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作者单位

School of Physics and Materials Science, Anhui Key Laboratory of Information Materials and Devices, Anhui University, Hefei 230039, China;

Hefei National Laboratory for Physical Sciences at Microscale, Department of Physics, University of Science and Technology of China, Hefei 230026, China;

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正文语种英语
中图分类固体物理学;
关键词
A. Manganites; B. Heterojunctions; C. Transport properties;

Electrical transport properties of heteroepitaxial p-n junction of charge-ordered La_(7/16)Ca_(9/16)MnO_3 and 0.5 wt Nb doped SrTiO_3

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