Correlation of structural phase transition and electrical transport properties of manganite films on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>SrTiO</mml:mtext></mml:mrow><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>

Magnetic phase transition in the manganite films has been found to be induced by the structural phase transition of the ${\text{SrTiO}}_{3}$ substrate at ${T}_{s}=105\text{ }\text{K}$ [Vlasko-Vlasov et al., Phys. Rev. Lett. 84, 2239 (2000) and Ziese et al., New J. Phys. 10, 063024 (2008)]. However, no change in the electrical transport properties has been detected at this temperature. Here we report the observation of the satellite peaks in the temperature dependence of the temperature coefficient of resistivity (TCR) at temperatures around 105 K in the ultrathin manganite films grown on ${\text{SrTiO}}_{3}$ substrates, triggered by the cubic-to-tetragonal structural phase transition in ${\text{SrTiO}}_{3}$. The TCR peak's magnitude decreases with an increasing thickness of the manganite film and with an increasing applied magnetic field. Our results demonstrate the strong coupling between the structural and transport properties in the manganite films.

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