Epitaxial Ba2IrO4 thin-films grown on SrTiO 3 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 SrTiO ₃ substrates by pulsed laser deposition

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

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

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 metal-insulator 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.

Original language	English
Article number	121913
Journal	Applied Physics Letters
Volume	104
Issue number	12
DOIs	https://doi.org/10.1063/1.4870049
State	Published - Mar 24 2014

Funding

Funders	Funder number
National Science Foundation Arctic Social Science Program	EPS-0814194, 0814194, 1265162

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.4870049

Cite this

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title = "Epitaxial Ba2IrO4 thin-films grown on SrTiO 3 substrates by pulsed laser deposition",

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 metal-insulator 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.",

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T1 - Epitaxial Ba2IrO4 thin-films grown on SrTiO 3 substrates by pulsed laser deposition

AU - Nichols, J.

AU - Korneta, O. B.

AU - Terzic, J.

AU - Cao, G.

AU - Brill, J. W.

AU - Seo, S. S.A.

PY - 2014/3/24

Y1 - 2014/3/24

N2 - 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 metal-insulator 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.

AB - 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 metal-insulator 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.

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