Electrical current effect in phase separated La(5/8-y)Pr(y)Ca(3/8)MnO(3): Charge order melting vs. Joule heating

JOAQUIN SACANELL; G. LEYVA; P. LEVY

JOURNAL OF APPLIED PHYSICS

American Institute of Physics

Año: 2005 vol. 98 p. 113708 - 113711

0021-8979

We have studied the effect of electric field on transport properties of the prototypical phase separated manganite La(5/8- y)Pr(y)Ca(3/8)MnO(3) with y=0.34. Our results show that the suggested image in which the charge ordered state is melted by the appliance of an electric current and/or voltage has to be revised. We were able to explain the observed resistivity drop in terms of an artifact related to Joule heating and the particular hysteresis that the system under study display, common to many other phase separated manganites.