Epitaxial Ba2IrO4 thin-films grown on SrTiO3 substrates by pulsed laser deposition

J. Nichols; O. B. Korneta; J. Terzic; G. Cao; J. W. Brill; S. S. A. Seo

doi:10.1063/1.4870049

Epitaxial Ba2IrO4 thin-films grown on SrTiO3 substrates by pulsed laser deposition

Strongly Correlated Electrons 2014-04-08 v1 Mesoscale and Nanoscale Physics Materials Science Superconductivity

Authors: J. Nichols , O. B. Korneta , J. Terzic , G. Cao , J. W. Brill , S. S. A. Seo

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Abstract

We have synthesized epitaxial Ba2IrO4 (BIO) thin-films on SrTiO3 (001) substrates by pulsed laser deposition and studied their electronic structure by dc-transport and optical spectroscopic experiments. We have observed that BIO thin-films are insulating but close to the metalinsulator transition boundary with significantly smaller transport and optical gap energies than its sister compound, Sr2IrO4. Moreover, BIO thin-films have both an enhanced electronic bandwidth and electronic-correlation energy. Our results suggest that BIO thin-films have great potential for realizing the interesting physical properties predicted in layered iridates.

Keywords

epitaxial thin films Ba2IrO4 pulsed laser deposition electronic structure metal-insulator transition iridates optical spectroscopy dc-transport

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@article{arxiv.1402.6591,
  title  = {Epitaxial Ba2IrO4 thin-films grown on SrTiO3 substrates by pulsed laser deposition},
  author = {J. Nichols and O. B. Korneta and J. Terzic and G. Cao and J. W. Brill and S. S. A. Seo},
  journal= {arXiv preprint arXiv:1402.6591},
  year   = {2014}
}

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Epitaxial Ba2IrO4 thin-films grown on SrTiO3 substrates by pulsed laser deposition

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