title: Surface-step-terrace-induced anomalous transport properties in highly epitaxial La0.67Ca0.33MnO3 thin films.
abstract: La0.67Ca0.33MnO3 thin films were epitaxially grown on miscut MgO(001) substrates by pulsed laser ablation. Electrical transport properties were studied by using an ultra high vacuum, four-probe STM system at different temperatures. Anomalous resistivity behavior and metal-insulator transition temperatures were found, both of which are highly dependent upon the miscut angle (1, 3, and 5°). These phenomena are attributed to the difference in residual strain that results from the difference in terrace widths of the vicinal surfaces.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Lu
authors.forename: Chendong
authors.initials: C
authors.lastname: Zhang
authors.forename: Haiming
authors.initials: H
authors.lastname: Guo
authors.forename: Hongjun
authors.initials: H
authors.lastname: Gao
authors.forename: Ming
authors.initials: M
authors.lastname: Liu
authors.forename: Jian
authors.initials: J
authors.lastname: Liu
authors.forename: Gregery
authors.initials: G
authors.lastname: Collins
authors.forename: Chonglin
authors.initials: C
authors.lastname: Chen
mesh_terms: D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D004579:Electron Transport; D007811:Lanthanum / Q000737:chemistry*; D008277:Magnesium Oxide / Q000138:chemical synthesis*; D008422:Materials Testing; D008567:Membranes, Artificial
chemical_list: D008567:Membranes, Artificial; D008277:Magnesium Oxide; C119467:lanthanum carbonate; D007811:Lanthanum