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Electric transport character in the La0.7Ce0.3MnO3–SrTiO3–Nb heterojunction by Z.G. Sheng; W.H. Song; Y.P. Sun; J.R. Sun; B.G. Shen is a Physics and Astronomy article available to read on EtoBox.

What is Electric transport character in the La0.7Ce0.3MnO3–SrTiO3–Nb heterojunction about?

The electric transport character in heterojunction composed of a La 0.7 Ce 0.3 MnO 3 film and a 0.5 wt% Nb-doped SrTiO 3 substrate (LCEM/STON) is investigated. It is found that the energy band gap (E g ) 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 ferromagnetic (FM) insulting phase in the heterojunction. These results are helpful in configuring artificial devices using manganites.

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Author

Z.G. Sheng; W.H. Song; Y.P. Sun; J.R. Sun; B.G. Shen

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0038-1098)

Published

2006

Language

EN

Field

Physics and Astronomy (Physical Sciences)