Charge-carrier-type controlled superconducting dome in ZrN_xO_y films

Bai, Xinbo1,2; Chen, Fucong1,2; Wang, Yuxin1,2; Xu, Juan1,3; Zhang, Ruozhou1,2; Qin, Mingyang1,4; Cheng, Wenxin1,2; Zhang, Jinsong1,2; Shi, Qiuyan1,2; Wang, Xu1,2; Zhu, Beiyi1,2; Yuan, Jie1,3; Chen, Qihong1,3; Kang, Jian5; Jiang, Kun1,2; Hu, Jiangping1,2; Li, Yangmu1,2; Jin, Kui1,2,6; Zhao, Zhongxian1,6

2023-09-12

10.1103/PhysRevMaterials.7.094801

PHYSICAL REVIEW MATERIALS   影响因子和分区

2475-9953

Modifying the normal state charge carriers and the related Fermi surface can significantly affect a material's superconducting state. The recently discovered superconducting dome as a function of chemical concentration in transition metal nitrides provides a promising platform for achieving such control. However, this effort was hindered by synthesis techniques that cannot stabilize the material's structure in the presence of a significant number of nitrogen vacancies. In this study, we employed oxygen-assisting nitrogen gas flow with radio frequency magnetron sputtering to stabilize the crystal structure of nitrogen-deficient zirconium nitride thin films and explore the impact of normal state charge carrier types on the superconducting state. Our electrical and thermoelectrical transport measurements indicate a fine-tuning of the superconducting transition temperature, Tc, through a shift from hole-type to electron-type charge carriers. Additionally, a concurrent strain release, reflected in the change of the film's crystal orientation, is observed in the process.

SCI ; EI

英语

其他

National Key Basic Re-search Program of China[2021YFA0718700] ; CAS through the Youth Innovation Promotion Association[2022YSBR-048] ; National Natural Sci-ence Foundation of China["11961141008","11927808","12274439"] ; Key-Area Research and Development Program of Guangdong Province[2020B0101340002] ; Beijing Natural Science Foundation[Z190008]

Materials Science

Materials Science, Multidisciplinary

WOS:001097383000002

AMER PHYSICAL SOC

20234014839357

Crystal orientation ; Domes ; Magnetron sputtering ; Nitrides ; Transition metals ; Zirconium compounds

Structural Members and Shapes:408.2 ; Metallurgy and Metallography:531 ; Inorganic Compounds:804.2 ; Crystal Lattice:933.1.1

Web of Science

1.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
3.Wuhan Univ, Sch Phys & Technol, Wuhan 430072, Peoples R China
4.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
5.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
6.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China

Bai, Xinbo,Chen, Fucong,Wang, Yuxin,et al. Charge-carrier-type controlled superconducting dome in ZrN_xO_y films[J]. PHYSICAL REVIEW MATERIALS,2023,7(9).

Bai, Xinbo.,Chen, Fucong.,Wang, Yuxin.,Xu, Juan.,Zhang, Ruozhou.,...&Zhao, Zhongxian.(2023).Charge-carrier-type controlled superconducting dome in ZrN_xO_y films.PHYSICAL REVIEW MATERIALS,7(9).

Bai, Xinbo,et al."Charge-carrier-type controlled superconducting dome in ZrN_xO_y films".PHYSICAL REVIEW MATERIALS 7.9(2023).