Charge ordering transition near the interface of La1-xSrxMnO3 (x~1/8) films

Yunzhong Chen, J. R. Sun, A. D. Wei, W. M. Lu, S. Liang, B. G. Shen

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Two clear phase transitions, an insulator to metal transition followed by a metal to insulator transition on cooling, were realized in La1−xSrxMnO3 (x1∼1/8) (LSMO) thin films grown on (011) SrTiO3 substrates due to the substrate-imposed anisotropic stain. Effects of phase transitions on the rectifying behavior of the corresponding junction LSMO/Nb:SrTiO3 were further investigated. The paramagnetic/insulator to ferromagnetic/metal transition led to a decrease in built-in potential of the junction, while the metallic to charge/orbital ordering transition results in a growth of interfacial barrier, which could be explained by Fermi-level shifts and the gap opening/closing in LSMO films. These results indicate the occurrence of clear phase transitions in the vicinity of interface in (011)-LSMO films. © 2008 American Institute of Physics.
Original languageEnglish
Article number152515
JournalApplied Physics Letters
Number of pages3
Publication statusPublished - 2008
Externally publishedYes


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