資料載入中.....
|
請使用永久網址來引用或連結此文件:
http://ir.ncue.edu.tw/ir/handle/987654321/15368
|
| 題名: | Pinning Effects Induced by Periodic Arrays of Structural Corrugations in Nb Thin Films |
| 作者: | Horng, Lance;Wu, J. C.;Kang, P. C.;Lin, P. H.;Wu, T. C. |
| 貢獻者: | 物理學系 |
| 關鍵詞: | Matching effect;Pinning array;Structural corrugation;Thin film |
| 日期: | 2003-05
|
| 上傳時間: | 2013-02-05T02:18:20Z
|
| 出版者: | The Japan Society of Applied Physics |
| 摘要: | Artificial vortex pinning arrays have been fabricated by electron-beam lithography in conjunction with reactive ion etching in Nb superconducting thin films in order to investigate flux pinning. Based on the structural corrugation in the Nb thin film, the square lattice of defects that act as pinning centers was created. A strong periodic pinning effect, as the vortex lattice matches the array of defects, can be observed in the evolution of resistivity and critical current with the applied magnetic fields in the mixed state of the Nb film, thus, revealing a synchronized pinning effect due to structural corrugation. This result is in agreement with the resistivity–temperature curves at matching fields and half-integer matching fields in which a crossover occurs for temperatures exceeding a certain threshold value. The phenomenon is related to the presence of the pinning structure at matching fields. |
| 關聯: | Jpn. J. Appl. Phys., 42(5A): 2679-2680 |
| 顯示於類別: | [物理學系] 期刊論文
|
文件中的檔案:
| 檔案 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | 0Kb | HTML | 601 | 檢視/開啟 |
|
在NCUEIR中所有的資料項目都受到原著作權保護.
|
