| Автор | Kebin Li |
| Автор | Yuheng Zhang |
| Дата выпуска | 1995-12-11 |
| dc.description | The irreversibility line H<sub>irr</sub>, cannot cross H<sub>c1</sub>, and the temperature dependence of H<sub>irr</sub>(T) differs from H<sub>c1</sub>(T). Therefore there exists an intersection between them, and it is expected that the simple power-law behaviour of the irreversibility line H<sub>irr</sub>(T)~(1-T/T<sub>c</sub>)<sup>alpha </sup> will break down over a wide range of temperature. We have observed this interesting phenomenon in our three YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/PrBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> (YBCO/PrBCO) multilayer thin films with different YBCO superconducting layers for the first time due to the enhancement of H<sub>c1</sub> in a parallel (|| CuO plane) magnetic field. The temperature dependence of H<sub>c1</sub>(T) in these three films is in good agreement with calculations of the enhanced H<sub>c1</sub> derived from the London approximation for the case of a slab of thickness tau which is thinner than the London penetration depth lambda , when the applied field is parallel to the sample surface, and they mimic the results observed by Civale and co-workers in thinner pure YBCO ultra-thin films (~25 nm). |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Enhancement of H<sub>c1</sub> and its influence on the irreversibility lines in multilayer YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>/PrBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> thin films |
| Тип | paper |
| DOI | 10.1088/0953-8984/7/50/018 |
| Electronic ISSN | 1361-648X |
| Print ISSN | 0953-8984 |
| Журнал | Journal of Physics: Condensed Matter |
| Том | 7 |
| Первая страница | 9845 |
| Последняя страница | 9851 |
| Аффилиация | Kebin Li; Inst. of Solid State Phys., Acad. Sinica, Hefei, China |
| Аффилиация | Yuheng Zhang; Inst. of Solid State Phys., Acad. Sinica, Hefei, China |
| Выпуск | 50 |
