Superconductivity of Ni-doping 2H-TaS2

被引：30
|
作者：
Li, L. J. [1 ]
Zhu, X. D. [1 ,2 ]
Sun, Y. P. [1 ,2 ]
Lei, H. C. [1 ]
Wang, B. S. [1 ]
Zhang, S. B. [1 ]
Zhu, X. B. [1 ]
Yang, Z. R. [1 ]
Song, W. H. [1 ]
机构：
[1] Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, Hefei 230031, Peoples R China
[2] Chinese Acad Sci, High Field Magnet Lab, Hefei 230031, Peoples R China
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2010年 / 470卷 / 5-6期
关键词：
Superconductivity; Single crystals; Charge density wave; TRANSITION-METAL DICHALCOGENIDES; ELECTRONIC-PROPERTIES; TEMPERATURE; TISE2; TAS2;
D O I：
10.1016/j.physc.2010.01.042
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The superconductivity of 2H-NixTaS2 single crystals with Ni-doping content of 0 <= x <= 0.08 is investigated. Compared with the temperature dependence of resistivity rho(T) curve of un-doped 2H-TaS2 with charge density wave (CDW) transition (T-CDW = 78 K), no sign of CDW is observed for Ni-doping sample NixTaS2, meaning the suppression of CDW caused by Ni-doping. The increase of superconducting critical temperature T-C caused by Ni-doping is observed and the optimal Ni-doping content corresponding to the maximum zero resistance temperature T-Czero(max) = 4.15 K is x = 0.04. The superconductivity of Ni0.04TaS2 investigated in detail. The obtained superconducting parameters indicated that Ni0.04TaS2 is an intermidiate coupling anisotropic type-II superconductor with anisotropy ratio gamma = H-c2(ab)(T)/H-c2(c)(T) approximate to 3.58. 0 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：313 / 317
页数：5
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