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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Ta1-xHfxB: a new FeB-prototype superconductor

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Author(s):
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Machado, A. J. S. [1] ; Correa, L. E. [1] ; da Luz, M. S. [2, 1] ; Santos, F. B. [1] ; de Lima, B. S. [1] ; Renosto, S. T. [1] ; Cigarroa, O. V. [1] ; Custdio, M. R. [1] ; Nunes, C. A. [1] ; Coelho, G. C. [1] ; Rogl, P. F. [3] ; Rosa, P. F. S. [4] ; Kim, D. J. [4] ; Fisk, Z. [4]
Total Authors: 14
Affiliation:
[1] Univ Sao Paulo, Escola Engn Lorena, BR-12602810 Lorena - Brazil
[2] Univ Fed Triangulo Mineiro, BR-38066200 Uberaba - Brazil
[3] Univ Vienna, Inst Phys Chem, A-1090 Vienna - Austria
[4] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 - USA
Total Affiliations: 4
Document type: Journal article
Source: SUPERCONDUCTOR SCIENCE & TECHNOLOGY; v. 28, n. 9 SEP 2015.
Web of Science Citations: 4
Abstract

In this work, we report superconductivity in the new ternary Ta1-xHfxB system. We also show clearly evidence that appropriate amounts of Hf substitution at the Ta site induce the stabilization of the orthorhombic FeB prototype structure in this system. Bulk superconductivity is confirmed by magnetization, electronic transport and specific heat measurements. The Hall signal has temperature dependence and the specific heat data at low temperature deviate from the conventional exponential temperature dependence in Ta0.7Hf0.3B. These results suggest multiband superconductivity in this compound. (AU)

FAPESP's process: 11/05961-3 - Study of superconductivity in diboride and dichalcogenates of transition metal (MeB2 and MeX2) with AlB2 prototype and its variations
Grantee:Sérgio Tuan Renosto
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/20181-0 - Evolution of topological Kondo insulating behavior in Sm1xRxB6 (r = Sr, Yb)
Grantee:Priscila Ferrari Silveira Rosa
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 14/01581-0 - Study of stabilization of the Th1-xMxB12 phase with UB12 prototype and experimental investigation of physical properties
Grantee:Sérgio Tuan Renosto
Support type: Scholarships abroad - Research Internship - Doctorate