Effect of Nickel Impurities on Charge-density-wave Formation in TaS₃

Authors

M.H. Rashid, University of Nebraska - Lincoln
David J. Sellmyer, University of Nebraska-LincolnFollow
Roger D. Kirby, University of Nebraska-LincolnFollow

Date of this Version

May 1984

Comments

Published Phys. Rev. B 29, 5398 (1984). Permission to use.

Abstract

Introduction of nickel impurities into TaS₃ has the effect of smearing the charge-density-wave transitions in TaS₃ of both orthorhombic and monoclinic phases. The orthorhombic doped crystals show non-Ohmic conductivity beyond threshold fields that are much larger than the threshold field of the pure phase, possibly due to additional pinning of the charge-density wave by nickel impurities. The charge-density-wave state is completely destroyed as 10 at % or more Ta atoms are replaced by Ni atoms and metallic behavior between 4.2 and 30 K is observed in these cases.