Multiband behavior signature in Hf0.97V0.03B2 superconductor compound

POSTER

Abstract

Isostructural MgB2 compounds which crystallizes in AlB2 prototype structure have been received much attention due to its potential for exhibit multiband behavior. Although there are many MB2 compounds (M -- refractory metal) superconductivity it is too hard of find in the MB2 compounds. However, previous studies have been shown that Zr1-xVxB2 exhibit superconducting behavior with signature of multiband. Within this context, in this work, we are showing preliminary results of the partial substitution of Hf for V in the Hf1-xVxB2 with bulk superconductivity. Hall effect, magnetization, specific heat and resistivity measurements strongly suggest that this new compound represents a new example of multiband behavior.

Authors

  • Sergio Renosto

    • Departamento de Materiais/EEL - Universidade de S\~ao Paulo, P.O. Box 116, Lorena - SP, Brasil

  • Orlando Cigarroa

    • Departamento de Materiais/EEL - Universidade de S\~ao Paulo, P.O. Box 116, Lorena - SP, Brasil

  • Ted Grant

    • Univ of California - Irvine
    • University of California - Irvine
    • Departament of Physics and Astronomy, University of California at Irvine, 92697, Irvine - CA, USA
    • University of California at Irvine

  • Carlos A. Moreira dos Santos

    • Escola de Engenharia de Lorena - USP, Brazil
    • Departamento de Materiais/EEL - Universidade de S\~ao Paulo, P.O. Box 116, Lorena - SP, Brasil

  • J. Albino Aguiar

    • Departamento de F\'isica, Universidade Federal de Pernambuco, Recife - PE, Brasil

  • Zachary Fisk

    • University of California, Irvine
    • Univ of California - Irvine
    • Departament of Physics and Astronomy, University of California at Irvine, 92697, Irvine - CA, USA
    • University of California at Irvine
    • University of California Irvine
    • Dept. of Physics and Astronomy, University of California, Irvine

  • A. Jefferson Machado

    • Escola de Engenharia de Lorena - EEL - USP
    • Departamento de Materiais/EEL - Universidade de S\~ao Paulo, P.O. Box 116, Lorena - SP, Brasil