Applicability of the vortex-glass model for the single crystal Tl0.4K0.41Fe1.71Se2

doi:10.1088/1674-1056/24/1/017401

中国物理B ›› 2015, Vol. 24 ›› Issue (1): 17401-017401.doi: 10.1088/1674-1056/24/1/017401

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂

于一^a, 汪春昌^a, 汪洪^a, 李秋菊^a, 张昌锦^b, 皮雳^{b c}, 张裕恒^b

a School of Physics and Material Science, Anhui University, Hefei 230601, China;
b High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China;
c Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China

收稿日期:2014-06-29 修回日期:2014-08-08 出版日期:2015-01-05 发布日期:2015-01-05
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11404002, 11404003, and 11074001) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, and the “211 Project” of Anhui University, China (Grant No. J01001319-J10113190007).

Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂

Yu Yi (于一)^a, Wang Chun-Chang (汪春昌)^a, Wang Hong (汪洪)^a, Li Qiu-Ju (李秋菊)^a, Zhang Chang-Jin (张昌锦)^b, Pi Li (皮雳)^{b c}, Zhang Yu-Heng (张裕恒)^b

a School of Physics and Material Science, Anhui University, Hefei 230601, China;
b High Magnetic Field Laboratory, Chinese Academy of Sciences and University of Science and Technology of China, Hefei 230026, China;
c Hefei National Laboratory for Physical Sciences at the Microscale, Hefei 230026, China

Received:2014-06-29 Revised:2014-08-08 Online:2015-01-05 Published:2015-01-05
Contact: Yu Yi E-mail:onlyyuyi@mail.ustc.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 11404002, 11404003, and 11074001) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, and the “211 Project” of Anhui University, China (Grant No. J01001319-J10113190007).

摘要/Abstract

摘要：

We measure the current-voltage (I-V) characteristics for the single crystal of Tl_0.4K_0.41Fe_1.71Se₂ with the superconducting transition temperature (T_C) 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) model. Combining theoretical calculations and analysis of the ρ_H⊥ab-T and ρ_H||ab-T data, we give an explicit discussion over the suitability of the VG model for the A_0.8Fe₂Se₂ 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.

关键词: iron-based superconductor, vortex-glass model, flux flow, pinning

Abstract:

Key words: iron-based superconductor, vortex-glass model, flux flow, pinning

中图分类号: (Transport properties)

74.25.F-

74.62.En (Effects of disorder) 74.20.Rp (Pairing symmetries (other than s-wave)) 74.70.Xa (Pnictides and chalcogenides)

于一, 汪春昌, 汪洪, 李秋菊, 张昌锦, 皮雳, 张裕恒. Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂[J]. 中国物理B, 2015, 24(1): 17401-017401.

Yu Yi (于一), Wang Chun-Chang (汪春昌), Wang Hong (汪洪), Li Qiu-Ju (李秋菊), Zhang Chang-Jin (张昌锦), Pi Li (皮雳), Zhang Yu-Heng (张裕恒). Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂[J]. Chin. Phys. B, 2015, 24(1): 17401-017401.

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Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂

Applicability of the vortex-glass model for the single crystal Tl_0.4K_0.41Fe_1.71Se₂

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