請用此 Handle URI 來引用此文件：
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20937完整後設資料紀錄
| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 蔡定平 | |
| dc.contributor.author | Chun-Yen Liao | en |
| dc.contributor.author | 廖俊諺 | zh_TW |
| dc.date.accessioned | 2021-06-08T03:11:17Z | - |
| dc.date.copyright | 2017-07-20 | |
| dc.date.issued | 2017 | |
| dc.date.submitted | 2017-04-25 | |
| dc.identifier.citation | Chapter 1
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/20937 | - |
| dc.description.abstract | 在光學領域中，超導的影響被認為相當的微弱，因為外加入射光的光子能量大小比庫柏電子對（超導電荷載子）的鍵結能高幾個數量級。藉由研究鈮(Niobium, 低溫超導體)在光學波段的電漿子響應，我們探討具有奈米結構的超導超穎材料與無結構超導體薄膜的隨溫度發生變化的光學性質。我們證明鈮超穎材料共振的位置和強度對於溫度改變具有顯著的依賴(從室溫降到數個的克式溫度)，並在超導相變溫度附近(~9K)具有急劇變化。在單獨的實驗中，測量無結構的鈮膜隨溫度改變的介電常數上被觀察到同樣劇烈的變化。我們的研究結果表明超導性確實影響在光學波段的電漿子行為，且可能在形成超導相變附近的光學介電常數的響應中發揮作用。 | zh_TW |
| dc.description.abstract | Superconductivity is commonly expected to be insignificant in optics, where photon energy is orders of magnitude higher than the binding energy of the Cooper pairs, the superconducting charge carriers. By studying optical range plasmonic response of niobium, a conventional low-temperature superconductor, we investigate the temperature-induced changes in the optical properties of a nanostructured superconducting metamaterial as well as unstructured superconductor film. We demonstrate that both the position and the strength of niobium metamaterial resonances exhibit a pronounced dependence on temperature down to a few Kelvin, with a sharp change in the behavior around the superconducting transition temperature at 9K. Equivalently dramatic changes are also observed in the temperature-dependence of the dielectric constant of unstructured niobium film measured in a separate experiment. Our results show that superconductivity does affect plasmonic behavior at optical frequencies and may play a role in forming the optical dielectric response near the superconducting transition. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T03:11:17Z (GMT). No. of bitstreams: 1 ntu-106-D02245001-1.pdf: 3586468 bytes, checksum: 8865787b4234a62290681e2a20084ce6 (MD5) Previous issue date: 2017 | en |
| dc.description.tableofcontents | 口試委員會審定書 I
誌謝 II 中文摘要 IV 英文摘要 V 內容 VI 圖目錄 IX 表目錄 XI Chapter 1 緒論 1 1.1 超穎材料 1 1.2 超導現象的背景與原理 3 1.2.1 基本性質 3 1.2.2 臨界電流密度 6 1.2.3 微觀量子態 6 1.2.4 超導體的應用 7 1.3 超導體超穎材料 9 1.4 參考文獻 11 Chapter 2 模擬計算方法與樣品設計 15 2.1 研究動機 15 2.2 數值模擬計算 19 2.2.1 前言 19 2.2.2 Drude-Lorentz model 19 2.2.3 模擬計算方法介紹 20 2.2.4 模擬計算空間設定 22 2.3 設計原理 24 2.4 參考文獻 26 Chapter 3 樣品製作與量測 27 3.1 前言 27 3.2 實驗儀器介紹 28 3.2.1 聚焦離子束技術 28 3.2.2 電子束直寫曝光微影系統 29 3.2.3 樣品製作流程 33 3.3 量測系統 34 3.3.1 低溫超導量測系統 34 3.3.2 橢偏儀測量系統 36 3.4 參考資料 38 Chapter 4 結果、分析與討論 39 4.1 前言 39 4.2 鈮超導膜 40 4.2.1 光學介電常數量測 40 4.2.2 模擬分析 41 4.3 鈮超導超穎材料 44 4.3.1 模擬分析 44 4.3.2 實驗與量測結果 46 4.4 熱力學模型 50 4.4.1 前言 50 4.4.2 Ginzburg-Landau方法對超導體超穎材料的光學響應 50 4.5 參考文獻 57 Chapter 5 總結 58 Chapter 6 附錄 59 | |
| dc.language.iso | zh-TW | |
| dc.title | 鈮超穎材料於超導相變邊界的光學性質之研究 | zh_TW |
| dc.title | Optical properties of niobium metamaterial near superconducting transition | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 105-2 | |
| dc.description.degree | 博士 | |
| dc.contributor.oralexamcommittee | 林恭如,嚴大任,任貽均,藍永強,王智明 | |
| dc.subject.keyword | 超穎材料,超導體,電漿子學, | zh_TW |
| dc.subject.keyword | Metamaterials,Superconductor,Plasmonics, | en |
| dc.relation.page | 64 | |
| dc.identifier.doi | 10.6342/NTU201700759 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2017-04-25 | |
| dc.contributor.author-college | 理學院 | zh_TW |
| dc.contributor.author-dept | 應用物理研究所 | zh_TW |
| 顯示於系所單位： | 應用物理研究所 | |
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