Magnetic field induced finite size effect in type-II superconductors
We explore the occurrence of a magnetic field induced finite size effect on the specific heat and
 correlation lengths of anisotropic type-II superconductors near the zero field transition temperature
 Tc. Since near the zero field transition thermal fluctuations are expected to domi...
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| Опубліковано в: : | Физика низких температур |
|---|---|
| Дата: | 2006 |
| Автор: | |
| Формат: | Стаття |
| Мова: | Англійська |
| Опубліковано: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2006
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| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/120201 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Magnetic field induced finite size effect in type-II
 superconductors / T. Schneider // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 521–527. — Бібліогр.: 62 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1862613446492684288 |
|---|---|
| author | Schneider, T. |
| author_facet | Schneider, T. |
| citation_txt | Magnetic field induced finite size effect in type-II
 superconductors / T. Schneider // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 521–527. — Бібліогр.: 62 назв. — англ. |
| collection | DSpace DC |
| container_title | Физика низких температур |
| description | We explore the occurrence of a magnetic field induced finite size effect on the specific heat and
correlation lengths of anisotropic type-II superconductors near the zero field transition temperature
Tc. Since near the zero field transition thermal fluctuations are expected to dominate and with
increasing field strength these fluctuations become one dimensional, whereupon the effect of fluctuations
increases, it appears unavoidable to account for thermal fluctuations. Invoking the scaling
theory of critical phenomena it is shown that the specific heat data of nearly optimally doped
YBa₂Cu₃O₇₋δ are inconsistent with the traditional mean-field and lowest Landau level predictions
of a continuous superconductor to normal state transition along an upper critical field
Hс₂(T). On the contrary, we observe agreement with a magnetic field induced finite size effect,
whereupon even the correlation length longitudinal to the applied field H cannot grow beyond the
limiting magnetic length LH ∝ 0/H. It arises because with increasing magnetic field the density
of vortex lines becomes greater, but this cannot continue indefinitely. LH is then roughly set
on the proximity of vortex lines by the overlapping of their cores. Thus, the shift and the rounding
of the specific heat peak in an applied field is traced back to a magnetic field induced finite size effect
in the correlation length longitudinal to the applied field.
|
| first_indexed | 2025-11-29T07:05:06Z |
| format | Article |
| fulltext | |
| id | nasplib_isofts_kiev_ua-123456789-120201 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0132-6414 |
| language | English |
| last_indexed | 2025-11-29T07:05:06Z |
| publishDate | 2006 |
| publisher | Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| record_format | dspace |
| spelling | Schneider, T. 2017-06-11T12:19:51Z 2017-06-11T12:19:51Z 2006 Magnetic field induced finite size effect in type-II
 superconductors / T. Schneider // Физика низких температур. — 2006. — Т. 32, № 4-5. — С. 521–527. — Бібліогр.: 62 назв. — англ. 0132-6414 PACS: 05.70.Jk, 74.40.+k https://nasplib.isofts.kiev.ua/handle/123456789/120201 We explore the occurrence of a magnetic field induced finite size effect on the specific heat and
 correlation lengths of anisotropic type-II superconductors near the zero field transition temperature
 Tc. Since near the zero field transition thermal fluctuations are expected to dominate and with
 increasing field strength these fluctuations become one dimensional, whereupon the effect of fluctuations
 increases, it appears unavoidable to account for thermal fluctuations. Invoking the scaling
 theory of critical phenomena it is shown that the specific heat data of nearly optimally doped
 YBa₂Cu₃O₇₋δ are inconsistent with the traditional mean-field and lowest Landau level predictions
 of a continuous superconductor to normal state transition along an upper critical field
 Hс₂(T). On the contrary, we observe agreement with a magnetic field induced finite size effect,
 whereupon even the correlation length longitudinal to the applied field H cannot grow beyond the
 limiting magnetic length LH ∝ 0/H. It arises because with increasing magnetic field the density
 of vortex lines becomes greater, but this cannot continue indefinitely. LH is then roughly set
 on the proximity of vortex lines by the overlapping of their cores. Thus, the shift and the rounding
 of the specific heat peak in an applied field is traced back to a magnetic field induced finite size effect
 in the correlation length longitudinal to the applied field. I would like to thank K.A. Mller for stimulating
 discussions on this and related subjects. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Spin Models Magnetic field induced finite size effect in type-II superconductors Article published earlier |
| spellingShingle | Magnetic field induced finite size effect in type-II superconductors Schneider, T. Spin Models |
| title | Magnetic field induced finite size effect in type-II superconductors |
| title_full | Magnetic field induced finite size effect in type-II superconductors |
| title_fullStr | Magnetic field induced finite size effect in type-II superconductors |
| title_full_unstemmed | Magnetic field induced finite size effect in type-II superconductors |
| title_short | Magnetic field induced finite size effect in type-II superconductors |
| title_sort | magnetic field induced finite size effect in type-ii superconductors |
| topic | Spin Models |
| topic_facet | Spin Models |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/120201 |
| work_keys_str_mv | AT schneidert magneticfieldinducedfinitesizeeffectintypeiisuperconductors |