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

作者：Nichols J^*; Korneta O B; Terzic J; Cao G; Brill J W; Seo S S A

来源：Applied Physics Letters, 2014, 104(12): 121913.

DOI：10.1063/1.4870049

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.

• 出版日期2014-3-24