Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors

We revisit the problem of the Casimir force between high-<i>T<sub>c</sub></i> superconductors below and above the critical temperature for the superconducting transition. Ceramic superconductors exhibit a different temperature dependence of the reflectivity when switching fro...

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Main Authors: Shunashi G. Castillo-López, Carlos Villarreal, Giuseppe Pirruccio, Raúl Esquivel-Sirvent
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Universe
Subjects:
Online Access:https://www.mdpi.com/2218-1997/7/3/69
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author Shunashi G. Castillo-López
Carlos Villarreal
Giuseppe Pirruccio
Raúl Esquivel-Sirvent
author_facet Shunashi G. Castillo-López
Carlos Villarreal
Giuseppe Pirruccio
Raúl Esquivel-Sirvent
author_sort Shunashi G. Castillo-López
collection DOAJ
description We revisit the problem of the Casimir force between high-<i>T<sub>c</sub></i> superconductors below and above the critical temperature for the superconducting transition. Ceramic superconductors exhibit a different temperature dependence of the reflectivity when switching from the normal to the superconducting state. We leverage this unique characteristic with respect to ordinary metals to claim that these kind of materials can prove useful as an alternative system where the long-standing discussion on the role of electronic relaxation can be addressed. Furthermore, we show that the two main damping mechanisms associated with free and mid-infrared electrons dominate at very distinct scales, meaning that they can be considered separately when the Casimir force is measured as a function of slab distance. This facilitates the experimental identification of the role of the two electronic relaxation contributions to the force.
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spelling doaj.art-ccc92f133cc64400965178017b51f40f2023-11-21T10:20:39ZengMDPI AGUniverse2218-19972021-03-01736910.3390/universe7030069Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> SuperconductorsShunashi G. Castillo-López0Carlos Villarreal1Giuseppe Pirruccio2Raúl Esquivel-Sirvent3Instituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Mexico 01000, MexicoInstituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Mexico 01000, MexicoInstituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Mexico 01000, MexicoInstituto de Física, Universidad Nacional Autónoma de México, Apartado Postal 20-364, Mexico 01000, MexicoWe revisit the problem of the Casimir force between high-<i>T<sub>c</sub></i> superconductors below and above the critical temperature for the superconducting transition. Ceramic superconductors exhibit a different temperature dependence of the reflectivity when switching from the normal to the superconducting state. We leverage this unique characteristic with respect to ordinary metals to claim that these kind of materials can prove useful as an alternative system where the long-standing discussion on the role of electronic relaxation can be addressed. Furthermore, we show that the two main damping mechanisms associated with free and mid-infrared electrons dominate at very distinct scales, meaning that they can be considered separately when the Casimir force is measured as a function of slab distance. This facilitates the experimental identification of the role of the two electronic relaxation contributions to the force.https://www.mdpi.com/2218-1997/7/3/69Casimir forcesuperconductivityhigh-<i>T<sub>c</sub></i> superconductors
spellingShingle Shunashi G. Castillo-López
Carlos Villarreal
Giuseppe Pirruccio
Raúl Esquivel-Sirvent
Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
Universe
Casimir force
superconductivity
high-<i>T<sub>c</sub></i> superconductors
title Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
title_full Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
title_fullStr Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
title_full_unstemmed Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
title_short Role of Electronic Relaxation Rates in the Casimir Force between High-<i>T<sub>c</sub></i> Superconductors
title_sort role of electronic relaxation rates in the casimir force between high i t sub c sub i superconductors
topic Casimir force
superconductivity
high-<i>T<sub>c</sub></i> superconductors
url https://www.mdpi.com/2218-1997/7/3/69
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