Superconducting gap and pair breaking in CeRu₂ studied by point contacts
The superconducting gap in a CeRu₂ single crystal is investigated by point contacts. BCS-like behavior of the gap Δ in the temperature range below Tc* (Tc*<Tc, where Tc is the critical temperature) is established, indicating the presence of a gapless superconductivity region (between Tc* and...
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| Опубліковано в: : | Физика низких температур |
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| Дата: | 2001 |
| Автори: | , , , , , , , |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2001
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/128807 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Superconducting gap and pair breaking in CeRu₂ studied by point contacts / A.V. Moskalenko, Yu. G. Naidyuk, I.K. Yanson, M.Hedo, Y.Inada, Y.Ōnuki, Y.Haga E. Yamamoto // Физика низких температур. — 2001. — Т. 27, № 8. — С. 831-834. — Бібліогр.: 9 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862683618582724608 |
|---|---|
| author | Moskalenko, A.V. Naidyuk, Yu.G. Yanson, I.K. Ōnuki, Y. Haga, Y. Yamamoto, E. Hedo, M. Inada, Y. |
| author_facet | Moskalenko, A.V. Naidyuk, Yu.G. Yanson, I.K. Ōnuki, Y. Haga, Y. Yamamoto, E. Hedo, M. Inada, Y. |
| citation_txt | Superconducting gap and pair breaking in CeRu₂ studied by point contacts / A.V. Moskalenko, Yu. G. Naidyuk, I.K. Yanson, M.Hedo, Y.Inada, Y.Ōnuki, Y.Haga E. Yamamoto // Физика низких температур. — 2001. — Т. 27, № 8. — С. 831-834. — Бібліогр.: 9 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | The superconducting gap in a CeRu₂ single crystal is investigated by point contacts. BCS-like behavior of the gap Δ in the temperature range below Tc* (Tc*<Tc, where Tc is the critical temperature) is established, indicating the presence of a gapless superconductivity region (between Tc* and Tc). The pair-breaking effect of paramagnetic impurities, supposedly Ce ions, is taken into consideration using the Scalski–Betbeder–Matibet–Weiss approach based on Abrikosov–Gorkov theory. It allows us to recalculate the superconducting order parameter Δα (in the presence of paramagnetic impurities) and the gap Δp (in the pure case) for the single crystal and for the previously studied polycrystalline CeRu₂. The value 2Δp(0)≈2 meV, with 2Δp(0)/kBTc≈3.75, is found in both cases, indicating that CeRu₂ is a “moderate” strong-coupling superconductor.
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| first_indexed | 2025-12-07T15:56:57Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-128807 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-12-07T15:56:57Z |
| publishDate | 2001 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Moskalenko, A.V. Naidyuk, Yu.G. Yanson, I.K. Ōnuki, Y. Haga, Y. Yamamoto, E. Hedo, M. Inada, Y. 2018-01-13T20:39:27Z 2018-01-13T20:39:27Z 2001 Superconducting gap and pair breaking in CeRu₂ studied by point contacts / A.V. Moskalenko, Yu. G. Naidyuk, I.K. Yanson, M.Hedo, Y.Inada, Y.Ōnuki, Y.Haga E. Yamamoto // Физика низких температур. — 2001. — Т. 27, № 8. — С. 831-834. — Бібліогр.: 9 назв. — англ. 0132-6414 PACS: 74.80.Fp, 74.70.Tx, 73.40.Jn https://nasplib.isofts.kiev.ua/handle/123456789/128807 The superconducting gap in a CeRu₂ single crystal is investigated by point contacts. BCS-like behavior of the gap Δ in the temperature range below Tc* (Tc*<Tc, where Tc is the critical temperature) is established, indicating the presence of a gapless superconductivity region (between Tc* and Tc). The pair-breaking effect of paramagnetic impurities, supposedly Ce ions, is taken into consideration using the Scalski–Betbeder–Matibet–Weiss approach based on Abrikosov–Gorkov theory. It allows us to recalculate the superconducting order parameter Δα (in the presence of paramagnetic impurities) and the gap Δp (in the pure case) for the single crystal and for the previously studied polycrystalline CeRu₂. The value 2Δp(0)≈2 meV, with 2Δp(0)/kBTc≈3.75, is found in both cases, indicating that CeRu₂ is a “moderate” strong-coupling superconductor. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Свеpхпpоводимость, в том числе высокотемпеpатуpная Superconducting gap and pair breaking in CeRu₂ studied by point contacts Article published earlier |
| spellingShingle | Superconducting gap and pair breaking in CeRu₂ studied by point contacts Moskalenko, A.V. Naidyuk, Yu.G. Yanson, I.K. Ōnuki, Y. Haga, Y. Yamamoto, E. Hedo, M. Inada, Y. Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| title | Superconducting gap and pair breaking in CeRu₂ studied by point contacts |
| title_full | Superconducting gap and pair breaking in CeRu₂ studied by point contacts |
| title_fullStr | Superconducting gap and pair breaking in CeRu₂ studied by point contacts |
| title_full_unstemmed | Superconducting gap and pair breaking in CeRu₂ studied by point contacts |
| title_short | Superconducting gap and pair breaking in CeRu₂ studied by point contacts |
| title_sort | superconducting gap and pair breaking in ceru₂ studied by point contacts |
| topic | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| topic_facet | Свеpхпpоводимость, в том числе высокотемпеpатуpная |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/128807 |
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