Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Possible multiband superconductivity in the quaternary carbide YRe2SiC

Full text
Author(s):
De Faria, L. R. [1] ; Ferreira, P. P. [1] ; Correa, L. E. [1] ; Eleno, L. T. F. [1] ; Torikachvili, M. S. [2] ; Machado, A. J. S. [1]
Total Authors: 6
Affiliation:
[1] Univ Sao Paulo, Escola Engn Lorena, POB 116, Lorena, SP - Brazil
[2] San Diego State Univ, Dept Phys, San Diego, CA 92182 - USA
Total Affiliations: 2
Document type: Journal article
Source: SUPERCONDUCTOR SCIENCE & TECHNOLOGY; v. 34, n. 6 JUN 2021.
Web of Science Citations: 0
Abstract

We report for the first time the occurrence of superconductivity in the quaternary silicide carbide YRe2SiC with T-c approximate to 5.9 K. The emergence of superconductivity was confirmed by means of magnetic susceptibility, electrical resistivity, and heat capacity measurements. The presence of a well-developed heat capacity feature at T-c confirms that superconductivity is a bulk phenomenon, while a second feature in the heat capacity near 0.5T(c) combined with the unusual temperature dependence of the upper critical field H-c2(T) indicate the presence of a multiband superconducting state. Additionally, the linear dependence of the lower critical field H-c1 with temperature resemble the behavior found in compounds with unconventional pairing symmetry. Band structure calculations reveal that YRe2SiC could harbor a non-trivial topological state and that the low-energy states occupy multiple disconnected sheets at the Fermi surface, with different degrees of hybridization, nesting, and screening effects, therefore making unconventional multiband superconductivity plausible. (AU)

FAPESP's process: 16/11774-5 - Study of superconductivity and magnetism in compounds which crystallize on the YbMo2Al4 and IrIn3 prototype structure
Grantee:Antonio Jefferson da Silva Machado
Support Opportunities: Regular Research Grants
FAPESP's process: 19/05005-7 - Computational Materials Laboratory for the ab initio study of the stability of intermetallic compounds
Grantee:Luiz Tadeu Fernandes Eleno
Support Opportunities: Regular Research Grants
FAPESP's process: 19/14359-7 - Growth single crystals and investigation of superconducting topological properties in metal transition dichalcogenides
Grantee:Antonio Jefferson da Silva Machado
Support Opportunities: Regular Research Grants
FAPESP's process: 19/17878-5 - Topological superconductivity in intermetallics (Ni,Zr)Te2 type
Grantee:Antonio Jefferson da Silva Machado
Support Opportunities: Research Grants - Visiting Researcher Grant - International
FAPESP's process: 20/08258-0 - Ab initio study of superconducting and topological systems
Grantee:Pedro Nunes Ferreira
Support Opportunities: Scholarships in Brazil - Doctorate