Cargando…

How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)

High-temperature superconducting cuprates respond to doping with a dome-like dependence of their critical temperature (T(c)). But the family-specific maximum T(c) can be surpassed by application of pressure, a compelling observation known for decades. We investigate the phenomenon with high-pressure...

Descripción completa

Detalles Bibliográficos
Autores principales: Jurkutat, Michael, Kattinger, Carsten, Tsankov, Stefan, Reznicek, Richard, Erb, Andreas, Haase, Jürgen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: National Academy of Sciences 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9926205/
https://www.ncbi.nlm.nih.gov/pubmed/36608293
http://dx.doi.org/10.1073/pnas.2215458120
_version_ 1784888228497588224
author Jurkutat, Michael
Kattinger, Carsten
Tsankov, Stefan
Reznicek, Richard
Erb, Andreas
Haase, Jürgen
author_facet Jurkutat, Michael
Kattinger, Carsten
Tsankov, Stefan
Reznicek, Richard
Erb, Andreas
Haase, Jürgen
author_sort Jurkutat, Michael
collection PubMed
description High-temperature superconducting cuprates respond to doping with a dome-like dependence of their critical temperature (T(c)). But the family-specific maximum T(c) can be surpassed by application of pressure, a compelling observation known for decades. We investigate the phenomenon with high-pressure anvil cell NMR and measure the charge content at planar Cu and O, and with it the doping of the ubiquitous CuO(2) plane with atomic-scale resolution. We find that pressure increases the overall hole doping, as widely assumed, but when it enhances T(c) above what can be achieved by doping, pressure leads to a hole redistribution favoring planar O. This is similar to the observation that the family-specific maximum T(c) is higher for materials where the hole content at planar O is higher at the expense of that at planar Cu. The latter reflects dependence of the maximum T(c) on the Cu–O bond covalence and the charge-transfer gap. The results presented here indicate that the pressure-induced enhancement of the maximum T(c) points to the same mechanism.
format Online
Article
Text
id pubmed-9926205
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher National Academy of Sciences
record_format MEDLINE/PubMed
spelling pubmed-99262052023-02-15 How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y) Jurkutat, Michael Kattinger, Carsten Tsankov, Stefan Reznicek, Richard Erb, Andreas Haase, Jürgen Proc Natl Acad Sci U S A Physical Sciences High-temperature superconducting cuprates respond to doping with a dome-like dependence of their critical temperature (T(c)). But the family-specific maximum T(c) can be surpassed by application of pressure, a compelling observation known for decades. We investigate the phenomenon with high-pressure anvil cell NMR and measure the charge content at planar Cu and O, and with it the doping of the ubiquitous CuO(2) plane with atomic-scale resolution. We find that pressure increases the overall hole doping, as widely assumed, but when it enhances T(c) above what can be achieved by doping, pressure leads to a hole redistribution favoring planar O. This is similar to the observation that the family-specific maximum T(c) is higher for materials where the hole content at planar O is higher at the expense of that at planar Cu. The latter reflects dependence of the maximum T(c) on the Cu–O bond covalence and the charge-transfer gap. The results presented here indicate that the pressure-induced enhancement of the maximum T(c) points to the same mechanism. National Academy of Sciences 2023-01-06 2023-01-10 /pmc/articles/PMC9926205/ /pubmed/36608293 http://dx.doi.org/10.1073/pnas.2215458120 Text en Copyright © 2023 the Author(s). Published by PNAS. https://creativecommons.org/licenses/by/4.0/This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY) (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Physical Sciences
Jurkutat, Michael
Kattinger, Carsten
Tsankov, Stefan
Reznicek, Richard
Erb, Andreas
Haase, Jürgen
How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title_full How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title_fullStr How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title_full_unstemmed How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title_short How pressure enhances the critical temperature of superconductivity in YBa(2)Cu(3)O(6+y)
title_sort how pressure enhances the critical temperature of superconductivity in yba(2)cu(3)o(6+y)
topic Physical Sciences
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9926205/
https://www.ncbi.nlm.nih.gov/pubmed/36608293
http://dx.doi.org/10.1073/pnas.2215458120
work_keys_str_mv AT jurkutatmichael howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y
AT kattingercarsten howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y
AT tsankovstefan howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y
AT reznicekrichard howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y
AT erbandreas howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y
AT haasejurgen howpressureenhancesthecriticaltemperatureofsuperconductivityinyba2cu3o6y