Enhanced superconductivity in TiO epitaxial thin films

	Enhanced superconductivity in TiO epitaxial thin films
	Zhang, Chao 1; Hao, Feixiang 1; Gao, Guanyin 1; Liu, Xiang 1; Ma, Chao 1; Lin, Yue 1; Yin, Yuewei 1; Li, Xiaoguang 1
刊名	NPJ QUANTUM MATERIALS
	2017
卷号	2
ISSN号	2397-4648
英文摘要	Titanium oxides have many fascinating optical and electrical properties, such as the superconductivity at 2 K in cubic titanium monoxide (TiO) polycrystalline bulk. However, the lack of TiO single crystals or epitaxial films has prevented systematic investigations on its superconductivity. Here, we report the basic superconductivity characterizations of cubic TiO films epitaxially grown on (0001)-oriented alpha-Al2O3 substrates. The magnetic and electronic transport measurements confirmed that TiO is a type-II superconductor and the recorded high T-c is about 7.4 K. The lower critical field (H-c1) at 1.9 K, the extrapolated upper critical field H-c2(0), and coherence length are about 18 Oe, 13.7 T, and 4.9 nm, respectively. With increasing pressure, the value of T-c shifts to lower temperature while the normal state resistivity increases. Our results on the superconducting TiO films confirm the strategy to achieve higher T-c in the epitaxial films, which may be helpful for finding more superconducting materials in various related systems.
资助项目	[Natural Science Foundation of China] ; [National Basic Research Program of China]
语种	英语
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124153]
专题	中国科学院合肥物质科学研究院
作者单位	1.University of Science & Technology of China, CAS 2.University of Nebraska System 3.Hefei Institutes of Physical Science, Chinese Academy of Sciences 4.Collaborat Innovat Ctr Adv Microstruct
推荐引用方式 GB/T 7714	Zhang, Chao,Hao, Feixiang,Gao, Guanyin,et al. Enhanced superconductivity in TiO epitaxial thin films[J]. NPJ QUANTUM MATERIALS,2017,2.
APA	Zhang, Chao.,Hao, Feixiang.,Gao, Guanyin.,Liu, Xiang.,Ma, Chao.,...&Li, Xiaoguang.(2017).Enhanced superconductivity in TiO epitaxial thin films.NPJ QUANTUM MATERIALS,2.
MLA	Zhang, Chao,et al."Enhanced superconductivity in TiO epitaxial thin films".NPJ QUANTUM MATERIALS 2(2017).