摘要
Physical properties of strongly correlated manganites are known to depend sensitively on lattice parameters. We show that in thin film form, the magnetic and transport properties of manganites can be tuned in a wide range using epitaxial strain. Specifically, by systematically varying the strain from negative to positive, we have observed 65%, -33%, 650%, and -17% changes for the saturation magnetization field Hs, saturation magnetization Ms, resistivity, and metal-insulator transition temperature. We explain these results with density functional theory calculations.
Physical properties of strongly correlated manganites are known to depend sensitively on lattice parameters. We show that in thin film form, the magnetic and transport properties of manganites can be tuned in a wide range using epitaxial strain. Specifically, by systematically varying the strain from negative to positive, we have observed 65%, -33%, 650%, and -17% changes for the saturation magnetization field Hs, saturation magnetization Ms, resistivity, and metal-insulator transition temperature. We explain these results with density functional theory calculations.
基金
Supported by the National Basic Research Program of China under Grant Nos 2011CB921800,2013CB932901 and 2014CB921104
the National Natural Science Foundation of China(91121002 and 11274071)
Shanghai Municipal Natural Science Foundation(14JC1400500)
the Fund of 1000 Talent Program
