Scaling of ac susceptibility and the nonlinear response function of high-temperature superconductors  

作　　者：CHEN Kaixuan NING Zhenhua XU Hengyi QI Zhi LU Guo WANG Furen YIN Daole 

机构地区：[1]Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China Department of Physics, Peking University, Beijing 100871, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2005年第1期14-25,共12页中国科学：物理学、力学、天文学（英文版）

基　　金：This work was supported by the Ministry of Science and Technology of China(Grant No.NKBRSG-G 1999064602);the National Natural Science Foundation of China(Grant Nos.10174003 and 50377040).

摘　　要：The amplitude-dependent ac susceptibility of high-temperature superconductors is shown to obey some empirical scaling relations. We try to analyze this behavior by extending a dc nonlinear response function of mixed state to the ac cases. The derived equations for critical current and ac susceptibility x(T) agree with the scaling relations of experimental data.The amplitude-dependent ac susceptibility of high-temperature superconductors is shown to obey some empirical scaling relations. We try to analyze this behavior by extending a dc nonlinear response function of mixed state to the ac cases. The derived equations for critical current and ac susceptibility X(T) agree with the scaling relations of experimental data.

关 键 词：high-temperature superconductor  AC susceptibility  SCALING law  NONLINEAR response. 

分 类 号：N[自然科学总论]