Characterization of ultrathin superconducting FeSe nanowires on SrTiO3 substrates

Liu, Jianhua1,2; Cui, Wenqiang3,4; Wang, Heng4; Zhao, Dapeng3; Zuo, Binjie4; Zhu, Yuying3; Liu, Xueyuan1,2; Zhang, Zhen1,2; Sun, Bing1,2; Wang, Lili4,5; Chang, Hudong1,2; He, Ke3,4,5; Xue, Qi-Kun3,4,5,6; Liu, Honggang1,2,7

2022-06-01

10.1088/1361-6668/ac5f79

SUPERCONDUCTOR SCIENCE & TECHNOLOGY   影响因子和分区

0953-2048

1361-6668

Superconducting quantum devices, due to their ultra-low power consumption, high sensitivity and high speed, have attracted great attention in recent years and put forward higher requirements for fabrication technology. Here, we report on the first superconducting ultrathin FeSe nanowires on SrTiO3 substrates successfully fabricated by electron beam lithography and Ar plasma ion beam etching. As the superconductivity of the molecular beam epitaxial ultrathin FeSe film is highly susceptible by moisture and oxygen, FeTe layers were deposited for protection. We synthesized a superconducting similar to 300 nm wide, similar to 1.1 nm thick ultrathin FeSe nanowire with T-C(Zero) approximate to 5 K (the critical temperature of zero resistance), as revealed by electrical transport measurements. The proper synthesis conditions of the high-quality ultrathin superconducting FeSe nanowires on SrTiO3 substrates are evaluated by analyzing the morphology and physical properties of the similar to 300 nm width ultrathin FeSe nanowire. Our work may pave the way for future applications of air-sensitive iron-based superconducting films.

superconductivity nanowire ultrathin FeSe

SCI ; EI

英语

其他

National Key Research and Development Program of China[2016YFA0201903] ; National Natural Science Foundation of China[61674168,61504165,11427903] ; Research and Development Project in Key Fields of Guangdong Province[2020B010171001]

Physics

Physics, Applied ; Physics, Condensed Matter

WOS:000788777400001

IOP Publishing Ltd

20221912093755

Electron beam lithography ; Electron beams ; Ion beams ; Iron-based Superconductors ; Molecular oxygen ; Nanowires ; Selenium compounds ; Strontium titanates ; Titanium compounds

High Temperature Superconducting Materials:708.3.1 ; Nanotechnology:761 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; High Energy Physics:932.1 ; Solid State Physics:933

PHYSICS

Web of Science

1.Chinese Acad Sci, Inst Microelect, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Microelect, Beijing 100029, Peoples R China
3.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China
4.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China
5.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China
6.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
7.Peking Univ, Res Ctr Carbon Based Elect, Dept Elect, Beijing 100871, Peoples R China

Liu, Jianhua,Cui, Wenqiang,Wang, Heng,et al. Characterization of ultrathin superconducting FeSe nanowires on SrTiO3 substrates[J]. SUPERCONDUCTOR SCIENCE & TECHNOLOGY,2022,35(6).

Liu, Jianhua.,Cui, Wenqiang.,Wang, Heng.,Zhao, Dapeng.,Zuo, Binjie.,...&Liu, Honggang.(2022).Characterization of ultrathin superconducting FeSe nanowires on SrTiO3 substrates.SUPERCONDUCTOR SCIENCE & TECHNOLOGY,35(6).

Liu, Jianhua,et al."Characterization of ultrathin superconducting FeSe nanowires on SrTiO3 substrates".SUPERCONDUCTOR SCIENCE & TECHNOLOGY 35.6(2022).