On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i>
This article reports on the non-trivial suppression of superconductivity in the Eu<sub>1−<i>x</i></sub>Pr<i><sub>x</sub></i>BCO cuprates. As non-magnetic Eu<sup>3+</sup> ions are replaced by Pr<sup>3+</sup> carrying a magnetic m...
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| Online Access: | https://www.mdpi.com/1996-1944/14/13/3503 |
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| author | Paweł Pęczkowski Piotr Zachariasz Cezariusz Jastrzębski Jarosław Piętosa Elżbieta Drzymała Łukasz Gondek |
| author_facet | Paweł Pęczkowski Piotr Zachariasz Cezariusz Jastrzębski Jarosław Piętosa Elżbieta Drzymała Łukasz Gondek |
| author_sort | Paweł Pęczkowski |
| collection | DOAJ |
| description | This article reports on the non-trivial suppression of superconductivity in the Eu<sub>1−<i>x</i></sub>Pr<i><sub>x</sub></i>BCO cuprates. As non-magnetic Eu<sup>3+</sup> ions are replaced by Pr<sup>3+</sup> carrying a magnetic moment, spin-related superconductivity loss can be expected. The research shows that the superconductivity disappearance for <i>x</i> > 0.4 results from depletion of the carriers and their localization. The above conclusion was drawn by low-temperature X-ray diffraction analysis showing increased characteristic phonon frequencies with Pr content. This mechanism should promote electron–phonon coupling, at least for acoustic phonons. However, the inverse phenomenon was detected. Namely, there is a gradual deterioration of the optical phonons responsible for vibration of the Cu–O bonds with Pr increasing, as evidenced by Raman spectroscopy. Furthermore, the results of X-ray absorption spectroscopy precisely showed the location of the carriers for Pr-rich specimens. Finally, a schematic diagram for Eu<sub>1−<i>x</i></sub>Pr<i><sub>x</sub></i>BCO is proposed to consolidate the presented research. |
| first_indexed | 2024-03-10T10:07:59Z |
| format | Article |
| id | doaj.art-e82df76a7964434599c7cf0e84066ea3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T10:07:59Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-e82df76a7964434599c7cf0e84066ea32023-11-22T01:26:38ZengMDPI AGMaterials1996-19442021-06-011413350310.3390/ma14133503On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i>Paweł Pęczkowski0Piotr Zachariasz1Cezariusz Jastrzębski2Jarosław Piętosa3Elżbieta Drzymała4Łukasz Gondek5Institute of Physical Sciences, Faculty of Mathematics and Natural Sciences, School of Exact Sciences, Cardinal Stefan Wyszyński University, K. Wóycickiego 1/3 Street, 01-938 Warsaw, PolandLTCC Technology and Printed Electronics Research Group, Łukasiewicz Research Network—Institute of Microelectronics and Photonics, Zabłocie 39 Street, 30-701 Kraków, PolandFaculty of Physics, Warsaw University of Technology, Koszykowa 75 Street, 00-662 Warsaw, PolandGroup of Phase Transition, Division of Physics of Magnetism, Institute of Physics, Polish Academy of Sciences, Lotników 32/46 Avenue, 02-668 Warsaw, PolandDepartment for Functional Nanomaterials, The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, W.E. Radzikowskiego 152 Street, 31-342 Kraków, PolandDepartment of Solid State Physics, Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, A. Mickiewicza 30 Avenue, 30-059 Kraków, PolandThis article reports on the non-trivial suppression of superconductivity in the Eu<sub>1−<i>x</i></sub>Pr<i><sub>x</sub></i>BCO cuprates. As non-magnetic Eu<sup>3+</sup> ions are replaced by Pr<sup>3+</sup> carrying a magnetic moment, spin-related superconductivity loss can be expected. The research shows that the superconductivity disappearance for <i>x</i> > 0.4 results from depletion of the carriers and their localization. The above conclusion was drawn by low-temperature X-ray diffraction analysis showing increased characteristic phonon frequencies with Pr content. This mechanism should promote electron–phonon coupling, at least for acoustic phonons. However, the inverse phenomenon was detected. Namely, there is a gradual deterioration of the optical phonons responsible for vibration of the Cu–O bonds with Pr increasing, as evidenced by Raman spectroscopy. Furthermore, the results of X-ray absorption spectroscopy precisely showed the location of the carriers for Pr-rich specimens. Finally, a schematic diagram for Eu<sub>1−<i>x</i></sub>Pr<i><sub>x</sub></i>BCO is proposed to consolidate the presented research.https://www.mdpi.com/1996-1944/14/13/3503high-temperature superconductorssolid-state reaction methodmagnetismX-ray diffractionRaman spectroscopyX-ray absorption spectroscopy |
| spellingShingle | Paweł Pęczkowski Piotr Zachariasz Cezariusz Jastrzębski Jarosław Piętosa Elżbieta Drzymała Łukasz Gondek On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> Materials high-temperature superconductors solid-state reaction method magnetism X-ray diffraction Raman spectroscopy X-ray absorption spectroscopy |
| title | On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> |
| title_full | On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> |
| title_fullStr | On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> |
| title_full_unstemmed | On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> |
| title_short | On the Superconductivity Suppression in Eu<sub>1</sub><sub>−</sub><i><sub>x</sub></i>Pr<i><sub>x</sub></i>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub><sub>−</sub><i><sub>δ</sub></i> |
| title_sort | on the superconductivity suppression in eu sub 1 sub sub sub i sub x sub i pr i sub x sub i ba sub 2 sub cu sub 3 sub o sub 7 sub sub sub i sub δ sub i |
| topic | high-temperature superconductors solid-state reaction method magnetism X-ray diffraction Raman spectroscopy X-ray absorption spectroscopy |
| url | https://www.mdpi.com/1996-1944/14/13/3503 |
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