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Tunable resistivity exponents in the metallic phase of epitaxial nickelates

Author

Listed:
  • Qikai Guo

    (University of Groningen)

  • Saeedeh Farokhipoor

    (University of Groningen)

  • César Magén

    (Universidad de Zaragoza-CSIC
    Instituto de Nanociencia de Aragón (INA), Universidad de Zaragoza)

  • Francisco Rivadulla

    (Universidade de Santiago de Compostela)

  • Beatriz Noheda

    (University of Groningen
    University of Groningen)

Abstract

We report a detailed analysis of the electrical resistivity exponent of thin films of NdNiO3 as a function of epitaxial strain. Thin films under low strain conditions show a linear dependence of the resistivity versus temperature, consistent with a classical Fermi gas ruled by electron-phonon interactions. In addition, the apparent temperature exponent, n, can be tuned with the epitaxial strain between n = 1 and n = 3. We discuss the critical role played by quenched random disorder in the value of n. Our work shows that the assignment of Fermi/Non-Fermi liquid behaviour based on experimentally obtained resistivity exponents requires an in-depth analysis of the degree of disorder in the material.

Suggested Citation

  • Qikai Guo & Saeedeh Farokhipoor & César Magén & Francisco Rivadulla & Beatriz Noheda, 2020. "Tunable resistivity exponents in the metallic phase of epitaxial nickelates," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16740-5
    DOI: 10.1038/s41467-020-16740-5
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    Cited by:

    1. Hye-Sung Kim & Ji-Sang An & Hyung Bin Bae & Sung-Yoon Chung, 2023. "Atomic-scale observation of premelting at 2D lattice defects inside oxide crystals," Nature Communications, Nature, vol. 14(1), pages 1-10, December.

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