Superconducting nature of the Bi-II phase of elemental bismuth

The superconductivity in the Bi-II phase of elemental bismuth (transition temperature Tc≃3.92 K at pressure p≃2.80 GPa) was studied experimentally by means of the muon-spin rotation as well as theoretically by using the Eliashberg theory in combination with density functional theory calculations. Ex...

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Published in:Physical review. B 2019-05, Vol.99 (17), p.174506, Article 174506
Main Authors: Khasanov, Rustem, Radonjić, Miloš M., Luetkens, Hubertus, Morenzoni, Elvezio, Simutis, Gediminas, Schönecker, Stephan, Appelt, Wilhelm H., Östlin, Andreas, Chioncel, Liviu, Amato, Alex
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Language:English
Subjects:
Bismuth
Critical field (superconductivity)
Density functional theory
Muon spin rotation
Phase transitions
Superconductivity
Transition temperature
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cited_by cdi_FETCH-LOGICAL-c313t-f8f67fcc3f75a09f1718838a0823a949cf8af4423be2c16facbc507b86d55bc23
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container_issue 17
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container_title Physical review. B
container_volume 99
creator Khasanov, Rustem
Radonjić, Miloš M.
Luetkens, Hubertus
Morenzoni, Elvezio
Simutis, Gediminas
Schönecker, Stephan
Appelt, Wilhelm H.
Östlin, Andreas
Chioncel, Liviu
Amato, Alex
description The superconductivity in the Bi-II phase of elemental bismuth (transition temperature Tc≃3.92 K at pressure p≃2.80 GPa) was studied experimentally by means of the muon-spin rotation as well as theoretically by using the Eliashberg theory in combination with density functional theory calculations. Experiments reveal that Bi-II is a type-I superconductor with a zero temperature value of the thermodynamic critical field Bc(0)≃31.97 mT. The Eliashberg theory approach provides a good agreement with the experimental Tc and the temperature evolution of Bc. The estimated value for the retardation (coupling) parameter kBTc/ωln≈0.07 (ωln is the logarithmically averaged phonon frequency) suggests that Bi-II is an intermediately coupled superconductor.
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source American Physical Society:Jisc Collections:APS Read and Publish 2023-2025 (reading list)
subjects Bismuth
Critical field (superconductivity)
Density functional theory
Muon spin rotation
Phase transitions
Superconductivity
Transition temperature
title Superconducting nature of the Bi-II phase of elemental bismuth
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