Extremely fast vortex dynamics in Bi2Sr2Ca2Cu3O10+δ crystalline nanostrip
A B Yu(于奥博)1,2,3, C T Lin(林成天)4, X F Zhang(张孝富)1,2,3,†, and L X You(尤立星)1,2,3,‡
1 State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China; 2 CAS Center for Excellence in Superconducting Electronics(CENSE), Shanghai 200050, China; 3 Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China; 4 Max Planck Institute for Solid State Research, Heisenbergstrasse 1, D-70569 Stuttgart, Germany
Abstract The maximum velocity of a mobile vortex in movement is generally limited by the phenomenon of flux-flow instability (FFI), which necessitates weak vortex pinning and fast heat removal from non-equilibrium electrons. We here demonstrate exfoliations and nano-fabrications of Bi2Sr2Ca2Cu3O10+δ crystalline nanostrips, which possess a rather weak pinning volume of vortices, relatively low resistivity, and large normal electron diffusion coefficient. The deduced vortex velocity in Bi2Sr2Ca2Cu3O10+δ crystalline nanostrips can be up to 300 km/s near the superconducting transition temperature, well above the speed of sound. The observed vortex velocity is an order of magnitude faster than that of conventional superconducting systems, representing a perfect platform for exploration of ultra-fast vortex matter and a good candidate for fabrications of superconducting nanowire single photon detectors or superconducting THz modulator.
Fund: This study was supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304000), the National Natural Science Foundation of China (Grant Nos. 61971408 and 61827823), Shanghai Municipal Science and Technology Major Project (Grant No. 2019SHZDZX01), Shanghai Rising-Star Program (Grant No. 20QA1410900), the Youth Innovation Promotion Association of Chinese Academy of Sciences (Grant Nos. 2020241 and 2021230), and the Natural Science Foundation of Shanghai (Grant No. 19ZR1467400). The experimental measurements were supported by the Superconducting Electronics Facility (SELF) of Shanghai Institute of Microsystem and Information Technology.
Corresponding Authors:
X F Zhang, L X You
E-mail: zhangxf@mail.sim.ac.cn;lxyou@mail.sim.ac.cn
Cite this article:
A B Yu(于奥博), C T Lin(林成天), X F Zhang(张孝富), and L X You(尤立星) Extremely fast vortex dynamics in Bi2Sr2Ca2Cu3O10+δ crystalline nanostrip 2023 Chin. Phys. B 32 067402
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