Electric transport character in the La0.7Ce0.3MnO3-SrTiO3-Nb heterojunction

Sheng ZG; Song WH; Sun YP; Sun JR; Shen BG

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Electric transport character in the La0.7Ce0.3MnO3-SrTiO3-Nb heterojunction

机译：La0.7Ce0.3MnO3-SrTiO3-Nb异质结中的电输运特性

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The electric transport character in heterojunction composed of a La0.7CeO3MnO3 film and a 0.5 wt% Nb-doped SrTiO3 substrate (LCEM/STON) is investigated. It is found that the energy band gap (Eg) between LCEM and STON decreases with increasing temperatures. The most striking observation of present work is that there exists a variation of reverse transport mechanism from ionization to tunneling at the temperature of 175 K. We attribute the temperature dependence of reverse transport mechanism to co-work of E-g and the ferrornagnetic (FM) insulting phase in the heterojunction. These results are helpful in configuring artificial devices using manganites. (c) 2005 Elsevier Ltd. All rights reserved.

机译：研究了由La0.7CeO3MnO3薄膜和0.5wt％掺Nb的SrTiO3衬底（LCEM / STON）组成的异质结中的电输运特性。发现随着温度升高，LCEM和STON之间的能带隙（Eg）减小。当前工作最惊人的发现是在175 K的温度下存在从离子化到隧穿的反向传输机制的变化。我们将反向传输机制的温度依赖性归因于Eg和铁磁（FM）的共同作用相在异质结中。这些结果有助于使用锰矿配置人工设备。（c）2005 Elsevier Ltd.保留所有权利。

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来源
《Solid State Communications》 |2006年第6期|p. 292-295|共4页
作者
Sheng ZG; Song WH; Sun YP; Sun JR; Shen BG;
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作者单位

Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China;

Chinese Acad Sci, State Key Lab Magnetism, Inst Phys, Beijing 100080, Peoples R China;

Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China;

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原文格式 PDF
正文语种 eng
中图分类固体物理学;
关键词
magnetically ordered materials; heterojunctions; tunneling; MANGANITE-BASED HETEROJUNCTION; FILMS; MAGNETORESISTANCE; TEMPERATURE; PHYSICS; OXIDES;

机译：磁性有序材料异质结隧道锰基异质结薄膜磁致电阻温度物理氧化物;

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Electric transport character in the La0.7Ce0.3MnO3-SrTiO3-Nb heterojunction

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