Journal
APPLIED PHYSICS LETTERS
Volume 86, Issue 9, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1870128
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The influence of a transport do current on electric resistivity has been investigated in epitaxial thin films of La1-xCaxMnO3 (x=0.2, 0.3). A most prominent finding is the appearance of a remarkable resistive peak at temperatures well below the Curie temperature T, Such a resistive peak is developed when the do current over a critical value was applied in a temperature cycling from 300 to 10 K. The resistance peak turns out to be extremely sensitive to a weak current. Even a very small current could greatly depress the height of the peak. Such a current-induced state with high resistivity is metastable compared to the pristine state. The stability of the induced state has been also studied. (C) 2005 American Institute of Physics.
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