| Quasi-two-dimensional superconductivity in wurtzite-structured InN films | |
|---|---|
| 學年 | 96 |
| 學期 | 1 |
| 出版（發表）日期 | 2007-12-01 |
| 作品名稱 | Quasi-two-dimensional superconductivity in wurtzite-structured InN films |
| 作品名稱（其他語言） | |
| 著者 | Ling, D. C.; Cheng, J. H.;Lo, Y. Y. ; Du, C. H.; Chiu, A. P.; Chang, C. A.; Chang. P. H. |
| 單位 | 淡江大學物理學系 |
| 出版者 | Weinheim: Wiley - VCH Verlag GmbH & Co. KGaA |
| 著錄名稱、卷期、頁數 | Physica Status Solidi. B: Basic Research 244(12), pp.4594-4597 |
| 摘要 | C-axis oriented InN films with wurtzite structure were grown on sapphire (0001) substrate by MOCVD method. Superconductivity with transition onset temperature Tc,onset around 3.5 K has been characterized by magnetotransport measurements in fields up to 9 Tesla for films with carrier concentration in the range of 1×1019 cm–3 to 7×1020 cm–3. Among them, the film with a nitridation buffer layer has the highest zero-resistance temperature Tc0 of 2 K. The normal-state magnetoresistance follows Kohler's rule ΔR /R ∝ (H /R)2, indicating that there is a single species of charge carrier with single scattering time at all points on the Fermi surface. The extrapolated value of zero-temperature upper critical field Hc 2ab (0) and Hc 2c (0) is estimated to be 5900 G and 2800 G, respectively, giving rise to the anisotropy parameter about 2.1. The angular dependence of the upper critical field is in good agreement with the behavior predicted by Lawrence-Doniach model in the two-dimensional (2D) limit strongly suggesting that the InN film is a quasi-2D superconductor. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0370-1972 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | DEU |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/50704 ) |
| SDGS | 產業創新與基礎設施 |
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