Nonlinear Flux Diffusion and ac Susceptibility in High-Tc Superconductors
BAI Wei-ping, CHEN Han-dong, YIN Dao-le, LI Gang, LI Chuan-yi, CHEN Kai-xuan, LU Guo
Department of Physics, Peking University, Beijing 100871
Nonlinear Flux Diffusion and ac Susceptibility in High-Tc Superconductors
BAI Wei-ping;CHEN Han-dong;YIN Dao-le;LI Gang;LI Chuan-yi;CHEN Kai-xuan;LU Guo
Department of Physics, Peking University, Beijing 100871
关键词 ：
74.25.Nf ,
74.60.Ge ,
74.72.-h
Abstract ： It is shown that the flux motion in high-Tc superconductors can be well consistently analysed by a unified materials equation. The different models of U ( J ) so far suggested can be shown as specific forms or limits of this unified materials equation. The scaling law of flux pinning derived from this equation agrees with recent experimental observations on high-Jc NdBa2 Gu3 O7-δ single crystal. The amplitude dependence of ac susceptibility derived from this equation is compared with several experimental results of high-Tc superconductors and a general power law is found.
Key words ：
74.25.Nf
74.60.Ge
74.72.-h
出版日期: 1998-09-01
引用本文:
BAI Wei-ping;CHEN Han-dong;YIN Dao-le;LI Gang;LI Chuan-yi;CHEN Kai-xuan;LU Guo. Nonlinear Flux Diffusion and ac Susceptibility in High-Tc Superconductors[J]. 中国物理快报, 1998, 15(9): 677-679.
c Superconductors. Chin. Phys. Lett., 1998, 15(9): 677-679.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y1998/V15/I9/677
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