Cascade excitation of vortex motion and reentrant superconductivity in flexible Nb thin films

Zhang, Liping1,2; Xu, Zuyu3; Li, Xiaojie3; Zhang, Xu2; Qin, Mingyang2,4; Zhang, Ruozhou2,5; Xu, Juan2; Cheng, Wenxin2,5; Yuan, Jie2,6; Wang, Huabing3,7; Silhanek, Alejandro V.8; Zhu, Beiyi2; Miao, Jun1; Jin, Kui2,5,9

2023-04-01

10.1088/1674-1056/acac16

CHINESE PHYSICS B   影响因子和分区

1674-1056

2058-3834

High quality Nb films were successfully prepared on both flexible polyimide (PI) and rigid Al2O3 substrates and their transport properties were systematically studied at various applied currents, external magnetic fields, and sample orientations. It is found that a curved Nb/PI film exhibits quite different superconducting transition and vortex dynamics compared to the flat Nb/Al2O3 film. For the curved Nb/PI film, smooth superconducting transitions were obtained at low currents, while unexpected cascade structures were revealed in the ?(T) curves at high currents. We attribute this phenomenon to the gradient distribution of vortex density together with a variation of superconductivity along the curved film. In addition, reentrant superconductivity was induced in the curved Nb/PI thin film by properly choosing the measurement conditions. We attribute this effect to the vortex pinning from both in-plane vortices and out-of-plane vortices. This work reveals the complex transport properties of curved superconducting thin films, providing important insights for further theoretical investigations and practical developments of flexible superconductors.

vortex dynamics flexible superconducting films transport properties superconducting films

SCI ; EI

英语

其他

National Key Basic Research Program of China["2021YFA0718700","2018YFB0704102","2017YFA0303003","2017YFA0302902","2016YFA0300301","2021YFA0718802"] ; National Natural Science Foundation of China["11927808","11834016","118115301","119611410","11961141008","61727805","11961141002"] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)["QYZDB-SSW-SLH008","QYZDY-SSW-SLH001"] ; Strategic Priority Research Program (B) of CAS["XDB25000000","XDB33000000"] ; Beijing Natural Science Foundation[Z190008] ; Key-Area Research and Development Program of Guangdong Province, China[2020B0101340002] ; China Postdoctoral Science Foundation[2022M711497]

Physics

Physics, Multidisciplinary

WOS:000969308200001

IOP Publishing Ltd

20231714020349

Alumina ; Aluminum oxide ; Niobium ; Thin films ; Transport properties ; Vortex flow

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Fluid Flow, General:631.1 ; Superconducting Materials:708.3 ; Inorganic Compounds:804.2 ; Physical Properties of Gases, Liquids and Solids:931.2

Web of Science

1.Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
3.Nanjing Univ, Res Inst Supercond Elect, Sch Elect Sci & Engn, Nanjing 210023, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
5.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
6.Univ Chinese Acad Sci, Sch Phys Sci, Key Lab Vacuum Phys, Beijing 101408, Peoples R China
7.Purple Mt Labs, Nanjing 211111, Peoples R China
8.Univ Liege, Expt Phys Nanostruct Mat, Q MAT, CESAM, B-4000 Sart Tilman Par Liege, Belgium
9.Songshan Lake Mat Lab, Dongguan 523808, Peoples R China

Zhang, Liping,Xu, Zuyu,Li, Xiaojie,et al. Cascade excitation of vortex motion and reentrant superconductivity in flexible Nb thin films[J]. CHINESE PHYSICS B,2023,32(4).

Zhang, Liping.,Xu, Zuyu.,Li, Xiaojie.,Zhang, Xu.,Qin, Mingyang.,...&Jin, Kui.(2023).Cascade excitation of vortex motion and reentrant superconductivity in flexible Nb thin films.CHINESE PHYSICS B,32(4).

Zhang, Liping,et al."Cascade excitation of vortex motion and reentrant superconductivity in flexible Nb thin films".CHINESE PHYSICS B 32.4(2023).