Applicability of the vortex-glass model for the single crystal Tl_(0.4)K_(0.41)Fe_(1.71)Se_2

作     者：于一 汪春昌 汪洪 李秋菊 张昌锦 皮雳 张裕恒 

作者机构：School of Physics and Material Science Anhui University High Magnetic Field Laboratory Chinese Academy of Sciences and University of Science and Technology of China Hefei National Laboratory for Physical Sciences at the Microscale 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2015年第24卷第1期

页      面：462-466页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11404002,11404003,and 11074001) the Scientific Research Foundation for the Returned Overseas Chinese Scholars the"211 Project"of Anhui University,China(Grant No.J01001319-J10113190007) 

主　　题：iron-based superconductor vortex-glass model flux flow pinning 

摘      要：We measure the current–voltage（I–V） characteristics for the single crystal of Tl0.4K0.41Fe1.71Se2 with the superconducting transition temperature（TC） around 30.5 K, under a 10 T magnetic field applied perpendicular and parallel to the ab plane. We find that the shapes of the I–V isotherms are very different from the description by the vortex-glass（VG） *** theoretical calculations and analysis of the ρH⊥ab–T and ρH ab–T data, we give an explicit discussion over the suitability of the VG model for the A0.8Fe2Se2 superconductors, and point out the possibility of the material acting as a convenient platform for re-examination and further study of the complex vortex behaviors in the layered superconductors.