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Transport properties of La2−xCexCuO4 thin films

✍ Scribed by H. Wu; L. Zhao; J. Yuan; L.X. Cao; B.Y. Zhu; X.G. Qiu; B.R. Zhao


Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
236 KB
Volume
460-462
Category
Article
ISSN
0921-4534

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✦ Synopsis


The electron-doped La 2Àx Ce x CuO 4 (x = 0.06-0.20) thin films with two orientations, (1 0 0) and (1 0 3), were successfully grown and their transport properties were investigated for the first time. The temperature dependence of the in-plane resistivity q ab evolves from the semiconducting behavior for under-doped films to the metallic behavior for optimal-and over-doped ones, which reveals a two dimensional (2D) Fermi liquid nature. The c-axis resistivity q c shows non-metallic behavior except for heavily over-doped films. The anisotropy factor q c /q ab is found to vary depending on the temperature and doping concentration, and the largest anisotropy value 1500 is related to the optimal doping (x = 0.10) at which the highest T C is obtained.


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