The higher superconducting transition temperature Tc and the functional derivative of Tc with α2F(ω) for electron-phonon superconductors

J. A. Camargo-Martínez; G. I. González-Pedreros; F. Mesa

doi:10.1088/1361-648X/abb741

The higher superconducting transition temperature T_c and the functional derivative of T_c with α²F(ω) for electron-phonon superconductors

Título traducido de la contribución: Alta transición superconductora de temperatura Tc y derivada funcional de Tc con α2F(ω) para electrón-fonón: Alta transición superconductora

J. A. Camargo-Martínez, G. I. González-Pedreros, F. Mesa

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7 Citas (Scopus)

Resumen

Este trabajo presenta un análisis de la derivada funcional de la transición superconductora de temperatura Tc con respecto a la función de acoplamiento electrón-fonón α2F (ω) [δTc / δα2F (ω)] y espectro α2F (ω) de H3S (Im ¯3m), en el rango de presión donde se midió la alta Tc (155-225 GPa). Los cálculos se realizan en el marco de la teoría de Migdal-Eliashberg. Encontramos para este superconductor electrón-fonón, una correlación entre los máximos de
δTc / δα2F (ω) y α2F (ω) con su mayor Tc. Corroboramos este comportamiento en otros superconductores de electrones-fonones mediante el análisis de los datos disponibles en la literatura, lo que sugiere su validez en este tipo de superconductores. La correlación observada podría considerarse como un
herramienta teórica que en un superconductor electrón-fonón, permite describir cualitativamente la proximidad a su Tc más alta, y determinando las condiciones físicas óptimas (presión, aleación o concentración de dopaje) que llevan al superconductor a alcanzar su Tc más alta posible.

Título traducido de la contribución	Alta transición superconductora de temperatura Tc y derivada funcional de Tc con α2F(ω) para electrón-fonón: Alta transición superconductora
Idioma original	Inglés estadounidense
Número de artículo	505901
Páginas (desde-hasta)	1-5
Número de páginas	5
Publicación	Journal of Physics Condensed Matter
Volumen	32
N.º	50
DOI	https://doi.org/10.1088/1361-648X/abb741
Estado	Publicada - sep. 23 2020

Áreas temáticas de ASJC Scopus

Ciencia de los Materiales General
Física de la materia condensada

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10.1088/1361-648X/abb741

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title = "The higher superconducting transition temperature Tc and the functional derivative of Tc with α2F(ω) for electron-phonon superconductors",

abstract = "This work presents an analysis of the functional derivative of the superconducting transition temperature Tc with respect to the electron-phonon coupling function α2F(ω) [δTc/δα2F(ω)] and α2F(ω) spectrum of H3S (Im ¯3m), in the pressure range where the high-Tc was measured (155-225 GPa). The calculations are done in the framework of the Migdal-Eliashberg theory. We find for this electron-phonon superconductor, a correlation between the maximums of δTc/δα2F(ω) and α2F(ω) with its higher Tc. We corroborate this behavior in other electron-phonon superconductors by analyzing data available in the literature, which suggests its validity in this type of superconductors. The correlation observed could be considered as a theoretical tool that in an electron-phonon superconductor, allows describing qualitatively the proximity to its highest Tc, and determining the optimal physical conditions (pressure, alloying or doping concentration) that lead to the superconductor reaching its highest Tc possible.",

author = "Camargo-Mart{\'i}nez, {J. A.} and Gonz{\'a}lez-Pedreros, {G. I.} and F. Mesa",

note = "Funding Information: The author acknowledge to the CGSTIC at Cinvestav for providing HPC resource on the Hybrid Cluster Supercomputer Xiuhcoatl and to Universidad del Rosario for providing HPC resource on Cluster of Laboratorio de Computaci?n Avanzada. JC and GG wish to recognize and thank Professor R Baquero for his unconditional friendship and academic support. Publisher Copyright: {\textcopyright} 2020 IOP Publishing Ltd Printed in the UK Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

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The higher superconducting transition temperature T_c and the functional derivative of T_c with α²F(ω) for electron-phonon superconductors. / Camargo-Martínez, J. A.; González-Pedreros, G. I.; Mesa, F.
En: Journal of Physics Condensed Matter, Vol. 32, N.º 50, 505901, 23.09.2020, p. 1-5.

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

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AU - Mesa, F.

N1 - Funding Information: The author acknowledge to the CGSTIC at Cinvestav for providing HPC resource on the Hybrid Cluster Supercomputer Xiuhcoatl and to Universidad del Rosario for providing HPC resource on Cluster of Laboratorio de Computaci?n Avanzada. JC and GG wish to recognize and thank Professor R Baquero for his unconditional friendship and academic support. Publisher Copyright: © 2020 IOP Publishing Ltd Printed in the UK Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/9/23

Y1 - 2020/9/23

N2 - This work presents an analysis of the functional derivative of the superconducting transition temperature Tc with respect to the electron-phonon coupling function α2F(ω) [δTc/δα2F(ω)] and α2F(ω) spectrum of H3S (Im ¯3m), in the pressure range where the high-Tc was measured (155-225 GPa). The calculations are done in the framework of the Migdal-Eliashberg theory. We find for this electron-phonon superconductor, a correlation between the maximums of δTc/δα2F(ω) and α2F(ω) with its higher Tc. We corroborate this behavior in other electron-phonon superconductors by analyzing data available in the literature, which suggests its validity in this type of superconductors. The correlation observed could be considered as a theoretical tool that in an electron-phonon superconductor, allows describing qualitatively the proximity to its highest Tc, and determining the optimal physical conditions (pressure, alloying or doping concentration) that lead to the superconductor reaching its highest Tc possible.

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