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

被引：13
|
作者：
Nichols, J. [1 ]
Korneta, O. B. [1 ]
Terzic, J. [1 ]
Cao, G. [1 ]
Brill, J. W. [1 ]
Seo, S. S. A. [1 ]
机构：
[1] Univ Kentucky, Dept Phys & Astron, Lexington, KY 40506 USA
来源：
APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 12期
基金：
美国国家科学基金会;
关键词：
SR2IRO4;
D O I：
10.1063/1.4870049
中图分类号：
O59 [应用物理学];
学科分类号：
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 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. (C) 2014 AIP Publishing LLC.
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