完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | 謝怡姍 | en_US |
dc.contributor.author | Hsieh, Yi-Shan | en_US |
dc.contributor.author | 林俊源 | en_US |
dc.contributor.author | Lin, Jiunn-Yuan | en_US |
dc.date.accessioned | 2014-12-12T01:50:15Z | - |
dc.date.available | 2014-12-12T01:50:15Z | - |
dc.date.issued | 2010 | en_US |
dc.identifier.uri | http://140.113.39.130/cdrfb3/record/nctu/#GT079827502 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/47689 | - |
dc.description.abstract | 我們對鐵基超導體11 系列-FeSe 單晶在磁場平行c 軸及平行ab 軸進行比熱量測。從比熱結果可以得知其超導溫度約為8 K,利用不 同的有序參數去擬合超導態電子比熱的結果,進一步獲悉了能隙上的 超導對對稱態。在費米面上同時存在了同向性(isotropic)s-wave 及異 向性(anisotropic)extended s-wave,而此結果與實驗數據γ(H)行為相 符。 除此之外,我們還對一系列的Ba(Fe1-xCox)2As2 單晶進行比熱量 測,成份為x=0, 0.08, 0.2。在成份為x=0.08 時,從電子比熱結果顯示 出超導溫度出現在Tc=21 K,而超導溫度隨著磁場的增加而降低。在 極低溫時,比熱明顯出現T2 項,提供了能隙上有節點的證據。因此, 我們可以知道Ba(Fe0.92Co0.08)2As2 為一能隙有節點之超導體。 | zh_TW |
dc.description.abstract | We have measured the low-temperature specific heat of FeSe single crystals with in-plane and out-of-plane magnetic fields. The symmetry of the order parameter and the mixed state will be discussed for compounds. Coexistence of isotropic s-wave and anisotropic extended s-wave is found in FeSe. The mixed state γ(H) is also in accord with above findings. Also, we have measured the low-temperature specific heat of Ba(Fe1-xCox)2As2 (x=0,0.08,0.2) single crystals. The electronic specific heat of Ba(Fe0.92Co0.08)2As2 in the superconductiong state with Tc=21 K is revealed. A T2 term was observed at low temperatures, providing the evidence of nodes in the gap. Furthermore, the data suggest a nodal feature for Ba(Fe0.92Co0.08)2As2. | en_US |
dc.language.iso | zh_TW | en_US |
dc.subject | 比熱 | zh_TW |
dc.subject | 鐵基超導體 | zh_TW |
dc.subject | s-波 | zh_TW |
dc.subject | d-波 | zh_TW |
dc.subject | 節線 | zh_TW |
dc.subject | specific heat | en_US |
dc.subject | iron-based superconductor | en_US |
dc.subject | s-wave | en_US |
dc.subject | d-wave | en_US |
dc.subject | nodal line | en_US |
dc.title | 鐵基超導體FeSe及Ba(Fe1-xCox)2As2的比熱研究 | zh_TW |
dc.title | Investigation of the specific heat of iron-based superconductors FeSe and Ba(Fe1-xCox)2As2 | en_US |
dc.type | Thesis | en_US |
dc.contributor.department | 物理研究所 | zh_TW |
顯示於類別: | 畢業論文 |