| Texto completo | |
| Autor(es): Mostrar menos - |
Bhattacharyya, A.
;
Adroja, D. T.
;
Jana, A. K.
;
Panda, K.
;
Ferreira, P. P.
;
Zhao, Y.
;
Ying, T.
;
Hosono, H.
;
Dorini, T. T.
;
Eleno, L. T. F.
;
Biswas, P. K.
;
Stenning, G.
;
Tripathi, R.
;
Qi, Y.
Número total de Autores: 14
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Alloys and Compounds; v. 978, p. 8-pg., 2024-01-12. |
| Resumo | |
We explore both experimental and theoretical aspects of the superconducting properties in the layered caged compound, Ba3Ir4Ge16. Our approach integrates muon spin rotation and relaxation (mu SR) measurements with magnetization and heat capacity experiments, accompanied by first -principle calculations. The compound's bulk superconductivity is unequivocally established through DC magnetization measurements, revealing a critical temperature (TC) of 5.7 K. A noteworthy characteristic observed in the low -temperature superfluid density is its saturating behavior, aligning with the features typical of conventional Bardeen-Cooper-Schrieffer (BCS) superconductors. The assessment of moderate electron -phonon coupling superconductivity is conducted through transverse field mu SR measurements, yielding a superconducting gap to TC ratio (2 Delta(0)/kBTC) of 4.04, a value corroborated by heat capacity measurements. Crucially, zero field mu SR measurements dismiss the possibility of any spontaneous magnetic field emergence below TC, highlighting the preservation of time -reversal symmetry. Our experimental results are reinforced by first -principles density functional calculations, underscoring the intricate interplay between crystal structure and superconducting order parameter symmetry in caged compounds. This comprehensive investigation enhances our understanding of the relationship between crystal structure and superconductivity in such unique compounds. (AU) | |
| Processo FAPESP: | 20/08258-0 - Estudo ab initio de sistemas supercondutores e topológicos |
| Beneficiário: | Pedro Nunes Ferreira |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 19/05005-7 - Laboratório de Computação em Materiais para o estudo ab initio da estabilidade de compostos intermetálicos |
| Beneficiário: | Luiz Tadeu Fernandes Eleno |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |