Atomically flat superconducting NbN thin films grown on SrTiO3 (111) by plasma-assisted MBE

被引：14

作者：

Wang, Guan-Yong ^{[1
]}

Zhu, Zhen ^{[1
]}

Yang, Xin-Yi ^{[1
]}

Dong, Lu ^{[1
]}

Ma, Hai-Yang ^{[1
]}

Sun, Hao-Hua ^{[1
]}

Li, Ai-Min ^{[1
]}

Guan, Dan-Dan ^{[1
,2
]}

Qian, Dong ^{[1
,2
]}

Liu, Canhua ^{[1
,2
]}

Li, Yao-Yi ^{[1
,2
]}

Jia, Jin-Feng ^{[1
,2
]}

机构：

[1] Shanghai Jiao Tong Univ, Key Lab Artificial Struct & Quantum Control, Minist Educ, Sch Phys & Astron, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[2] Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China

来源：

APL MATERIALS | 2017年 / 5卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.5005107

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Atomically flat superconducting NbN thin films have been grown on the SrTiO3 (111) substrate by plasma-assisted molecular beam epitaxy for the first time. Using scanning tunneling microscopy and in situ reflection high energy electron diffraction, we investigate the surface structure of epitaxial NbN thin films on the SrTiO3 (111) substrate. The orientation [10 (1) over bar](NbN)//[11 (2) over bar](STO) is dominating at substrate temperature above 700 degrees C. The quality of the as-grown films can be further improved by annealing at elevated temperatures. The homogeneous spatial distribution of superconducting gaps and magnetic vortices further demonstrates the high quality of the NbN films. (c) 2017 Author(s).

引用

页数：7

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