arXiv 1402.65912014-02-26cond-mat.str-elcond-mat.mes-hallcond-mat.mtrl-scicond-mat.supr-con

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

备注：: 3 figures
发表信息：: Appl. Phys. Lett. 104, 121913 (2014)
DOI：: 10.1063/1.4870049

英文摘要：

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.

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