Single crystal growth and characterizations of Cu0.03TaS2 superconductors

TL;DR

This study reports the successful growth and detailed characterization of Cu0.03TaS2 single crystals, revealing their superconducting and charge density wave properties at low temperatures.

Contribution

The paper presents the first synthesis and structural analysis of Cu0.03TaS2 single crystals with low copper content and investigates their superconducting and charge density wave behaviors.

Findings

Superconductivity below 4.2 K in Cu0.03TaS2

Charge density wave transition at 50 K

Structural similarity to parent 2H-TaS2 crystal

Abstract

Single crystal of Cu0.03TaS2 with low copper intercalated content was successfully grown via chemical iodine-vapor transport. The structural characterization results show that the copper intercalated 2H-Cu0.03TaS2 single crystal has the same structure of the CdI2-type structure as the parent 2H-TaS2 crystal. Electrical resistivity and magnetization measurements reveal that 2H-Cu0.03TaS2 becomes a superconductor below 4.2 K. Besides, electrical resistivity and Hall effects results show that a charge density wave transition occurs at TCDW = 50 K.