Epitaxial growth and thermodynamic stability of SrIrO3/SrTiO3 heterostructures

被引:46
作者
Groenendijk, D. J. [1 ]
Manca, N. [1 ]
Mattoni, G. [1 ]
Kootstra, L. [1 ]
Gariglio, S. [2 ]
Huang, Y. [3 ]
van Heumen, E. [3 ]
Caviglia, A. D. [1 ]
机构
[1] Delft Univ Technol, Kavli Inst Nanosci, POB 5046, NL-2600 GA Delft, Netherlands
[2] Univ Geneva, Dept Quantum Matter Phys, 24 Quai Ernest Ansermet, CH-1211 Geneva 4, Switzerland
[3] Univ Amsterdam, IoP, Van der Waals Zeeman Inst, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands
关键词
METAL; TRANSITION;
D O I
10.1063/1.4960101
中图分类号
O59 [应用物理学];
学科分类号
摘要
Obtaining high-quality thin films of 5d transition metal oxides is essential to explore the exotic semimetallic and topological phases predicted to arise from the combination of strong electron correlations and spin-orbit coupling. Here, we show that the transport properties of SrIrO3 thin films, grown by pulsed laser deposition, can be optimized by considering the effect of laser-induced modification of the SrIrO3 target surface. We further demonstrate that bare SrIrO3 thin films are subject to degradation in air and are highly sensitive to lithographic processing. A crystalline SrTiO3 cap layer deposited in-situ is effective in preserving the film quality, allowing us to measure metallic transport behavior in films with thicknesses down to 4 unit cells. In addition, the SrTiO3 encapsulation enables the fabrication of devices such as Hall bars without altering the film properties, allowing precise (magneto) transport measurements on micro-and nanoscale devices. Published by AIP Publishing.
引用
收藏
页数:4
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