Superconductivity and single crystal growth of Ni0:05TaS2
X.D. Zhu, Y.P. Sun, S.B. Zhang, H. C. Lei, X.B. Zhu, Lijun Li, Z.R., Yang, W.H. Song, J.M. Dai
TL;DR
This paper reports the successful growth of Ni0.05TaS2 single crystals using a NaCl/KCl flux method, revealing enhanced superconductivity at 3.9 K and suppression of charge-density-wave transition, indicating a new approach for layered transition metal dichalcogenides.
Contribution
It introduces a novel NaCl/KCl flux method for growing Ni0.05TaS2 single crystals and demonstrates its effectiveness in enhancing superconductivity.
Findings
Superconductivity in Ni0.05TaS2 with Tc of 3.9 K
Successful growth of Ni0.05TaS2 single crystals
Suppression of charge-density-wave transition
Abstract
Superconductivity was discovered in a Ni0:05TaS2 single crystal. A Ni0:05TaS2 single crystal was successfully grown via the NaCl/KCl flux method. The obtained lattice constant c of Ni0:05TaS2 is 1.1999 nm, which is significantly smaller than that of 2H-TaS2 (1.208 nm). Electrical resistivity and magnetization measurements reveal that the superconductivity transition temperature of Ni0:05TaS2 is enhanced from 0.8 K (2H-TaS2) to 3.9 K. The charge-density-wave transition of the matrix compound 2H-TaS2 is suppressed in Ni0:05TaS2. The success of Ni0:05TaS2 single crystal growth via a NaCl/KCl flux demonstrates that NaCl/KCl flux method will be a feasible method for single crystal growth of the layered transition metal dichalcogenides.
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