Evidence of the superconductivity in the Zr-Pt-Te system

POSTER

Abstract

Layered transition metal dichalcogenides MetalX$_{2}$ are well-known CDW conductors, with low dimensionality properties. The structure of layered TMDC can be regarded as a stacking of covalent coupled M-X-X sandwiches, and the coupling between layers X-X is of weak van de Waals type. The intercalation of metallic atoms into the weak coupled region between the X-X layers leads to significant modification of electronic properties. In this work results suggest that the Pt intercalation is able for induce superconductivity in the matrix compound (ZrTe$_{2})$. The critical temperature at 6.5 K is revealed through of magnetization, resistivity and specific heat measurements. Heat-capacity measurements show unambiguously a bulk superconductivity behavior. However, the x-ray diffraction results reveal that ZrPt$_{x}$Te$_{2 }$can crystallize in the LiCrS2 prototype structure. Thus, we had shown that the superconductivity is induced by intercalation of Pt atoms.

Authors

  • Sergio Renosto

    Escola de Engenharia de Lorena, Universidade de S\~ao Paulo, P.O. Box 116, Lorena, SP, Brasil

  • Ted Grant

    University of California Irvine, Departments of Physics and Astronomy, University of California at Irvine, Irvine, CA 92697, USA, University of California, Irvine, University of California - Irvine

  • Zachary Fisk

    Departments of Physics and Astronomy, University of California at Irvine, Irvine, CA 92697, USA, University of California, Irvine

  • Antonio Machado

    Escola de Egenharia de Lorena, Universidade de S\~ao Paulo, P.O. Box 116, Lorena, SP, Brazil, Escola de Engenharia de Lorena, Universidade de S\~ao Paulo, P.O. Box 116, Lorena, SP, Brasil