Single crystal growth and characterizations of Cu0.03TaS2 superconductors

Abstract Single crystal of Cu 0.03 TaS 2 with low copper intercalated content was successfully grown via the chemical vapor transport method. The structural characterization results show that the copper intercalated 2 H -Cu 0.03 TaS 2 single crystal has the same structure of the CdI 2 -type structure as the parent 2 H -TaS 2 crystal. Electrical resistivity and magnetization measurements reveal that 2 H -Cu 0.03 TaS 2 becomes a superconductor below 4.2 K. Besides, electrical resistivity and Hall effects results show that a charge-density-wave transition occurs at T CDW =50 K.

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