Ionic Liquid Gating Control of Oxygen Vacancies in the La0.8Ba0.2MnO3 Ultrathin Films

doi:10.1149/2162-8777/ac5496

	Ionic Liquid Gating Control of Oxygen Vacancies in the La0.8Ba0.2MnO3 Ultrathin Films
	Lin, Guankai 1,3; Wang, Haoru 1; Cai, Xuhui 1; Tong, Wei 2; Zhu, Hong 1
刊名	ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
	2022-02-01
卷号	11
ISSN号	2162-8769
DOI	10.1149/2162-8777/ac5496
通讯作者	Zhu, Hong(zhuh@ustc.edu.cn)
英文摘要	In this work, we show ionic liquid field-effect of La0.8Ba0.2MnO3 (LBMO) untrathin films prepared by the sol-gel method. When applying a positive gate voltage (V (g)) in vacuum, it is found that the film resistivity continuously increases tenfold within hours or minutes depending on the magnitude of V (g), accompanied with disappearance of the low-temperature metallic transport behavior. In contrast, the film resistivity changes little in air or under a negative applied V (g). Such a difference reveals that the increased resistivity is related to the oxygen depletion in the films under the positive V (g), especially at the grain boundaries. After removing the positive V (g) in vacuum, the room-temperature resistivity begins to fall off and the low-temperature metallic state is partially restored in several tens hours, suggesting oxygen diffusion from the relatively oxygen-rich grains to the seriously oxygen-deficient grain boundaries. Furthermore, the oxygen content in the oxygen-deficient films can be almost fully restored in ten minutes by external annealing (200 degrees C) or Joule self-heating (21 mA) the films in air. These experimental findings provide an additional method in tuning oxygen vacancies in transition-metal oxide films.
资助项目	National Natural Science Foundation of China[11674298] ; Users with Excellence Project of Hefei Science Center CAS[2018HSC-UE013]
WOS关键词	SUPERCONDUCTIVITY
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELECTROCHEMICAL SOC INC
WOS记录号	WOS:000759147300001
资助机构	National Natural Science Foundation of China ; Users with Excellence Project of Hefei Science Center CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127892]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhu, Hong
作者单位	1.Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China 2.Chinese Acad Sci, High Magnet Field Lab, Anhui Prov Key Lab Condensed Matter Phys Extreme, Hefei 230031, Peoples R China 3.Fujian Univ Technol, Sch Elect Elect Engn & Phys, Fuzhou 350118, Peoples R China
推荐引用方式 GB/T 7714	Lin, Guankai,Wang, Haoru,Cai, Xuhui,et al. Ionic Liquid Gating Control of Oxygen Vacancies in the La0.8Ba0.2MnO3 Ultrathin Films[J]. ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY,2022,11.
APA	Lin, Guankai,Wang, Haoru,Cai, Xuhui,Tong, Wei,&Zhu, Hong.(2022).Ionic Liquid Gating Control of Oxygen Vacancies in the La0.8Ba0.2MnO3 Ultrathin Films.ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY,11.
MLA	Lin, Guankai,et al."Ionic Liquid Gating Control of Oxygen Vacancies in the La0.8Ba0.2MnO3 Ultrathin Films".ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY 11(2022).