Electrical resistivity anomaly in (Pr1-yMy)1-xCaxCoO3 epitaxial films (M=Y, Gd) fabricated by pulsed laser deposition

Y. Noda, H. Fujishiro, T. Naito, A. Ito, T. Goto, J. Hejtmanek, Z. Jirak

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

(Pr1-yMy)1-xCaxCoO3 epitaxial films (M=Y, Gd) have been successfully fabricated by pulsed laser deposition on the single crystal substrates with different lattice constant. The polycrystalline bulk of this material shows a first-order metal-insulator (MI) transition below the critical temperature. Although ρ(T) of all the as-grown films shows a semiconducting behavior at entire temperature range, an anomalous ρ(T) upturn with wide hysteresis can be clearly seen for the film grown on the SrLaAlO4 (SLAO) substrate, which applied the in-plane compressive stress to the film. Such anomaly in ρ(T) is interpreted as a sign of the first-order phase transition related with the spin-state (SS) transition, which was observed in the polycrystalline bulk.

Original languageEnglish
Article number025318
JournalAIP Advances
Volume6
Issue number2
DOIs
Publication statusPublished - 2016 Feb 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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