中国物理B ›› 2018, Vol. 27 ›› Issue (8): 88103-088103.doi: 10.1088/1674-1056/27/8/088103
• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇 下一篇
Kai-Li Zhang(张凯莉), Cong-Cong Fan(樊聪聪), Wan-Ling Liu(刘万领), Yu-Feng Wu(吴宇峰), Xiang-Le Lu(卢祥乐), Zheng-Tai Liu(刘正太), Ji-Shan Liu(刘吉山), Zhong-Hao Liu(刘中灏), Da-Wei Shen(沈大伟)
Kai-Li Zhang(张凯莉)1,2, Cong-Cong Fan(樊聪聪)1,2, Wan-Ling Liu(刘万领)3, Yu-Feng Wu(吴宇峰)1,2, Xiang-Le Lu(卢祥乐)1,2, Zheng-Tai Liu(刘正太)1,4, Ji-Shan Liu(刘吉山)1,4, Zhong-Hao Liu(刘中灏)1,4, Da-Wei Shen(沈大伟)1,4
摘要:
Recently, 5d transition metal iridates have been reported as promising materials for the manufacture of exotic quantum states. Apart from the semimetallic ground states that have been observed, perovskite SrIrO3 is also predicted to have a lattice-symmetrically protected topological state in the (110) plane due to its strong spin-orbit coupling and electron correlation. Compared with non-polar (001)-SrIrO3, the especial polarity of (110)-SrIrO3 undoubtedly adds the difficulty of fabrication and largely impedes the research on its surface states. Here, we have successfully synthesized high-quality (110)-SrIrO3 thin films on (110)-SrTiO3 substrates by reactive molecular beam epitaxy for the first time. Both reflection high-energy electron diffraction patterns and x-ray diffraction measurements suggest the expected orientation and outstanding crystallinity. A (1×2) surface reconstruction driven from the surface instability, the same as that reported in (110)-SrTiO3, is observed. The electric transport measurements uncover that (110)-SrIrO3 exhibits a more prominent semimetallic property in comparison to (001)-SrIrO3.
中图分类号: (Methods of deposition of films and coatings; film growth and epitaxy)