Extremely fast vortex dynamics in Bi_(2)Sr_(2)Ca_(2)Cu_(3)O_(10+δ) crystalline nanostrip  

作　　者：于奥博 林成天 张孝富 尤立星 A B Yu;C T Lin;X F Zhang;L X You(State Key Laboratory of Functional Materials for Informatics,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,Shanghai 200050,China;CAS Center for Excellence in Superconducting Electronics(CENSE),Shanghai 200050,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Max Planck Institute for Solid State Research,Heisenbergstrasse 1,D-70569 Stuttgart,Germany)

机构地区：[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

出　　处：《Chinese Physics B》2023年第6期563-568,共6页中国物理B（英文版）

基　　金：supporting high quality of post growth treatment Bi_(2)Sr_(2)Ca_(2)Cu_(3)O_(10+δ)single crystals;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);the Natural Science Foundation of Shanghai(Grant No.19ZR1467400)。

摘　　要：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 Bi_(2)Sr_(2)Ca_(2)Cu_(3)O_(10+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 Bi_(2)Sr_(2)Ca_(2)Cu_(3)O_(10+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.

关 键 词：Bi_(2)Sr_(2)Ca_(2)Cu_(3)O_(10+δ)(Bi2223) vortices dynamics ultra thin single crystal nanowire 

分 类 号：TB383.1[一般工业技术—材料科学与工程]