研究生: |
劉懿嫻 Liu Yi-Hsien |
---|---|
論文名稱: |
不規則形狀之三維軸對稱量子點的能階分布研究 On the Spectrum of Axisymmetric 3D Quantum dot with irregular shape |
指導教授: |
林文偉
Wen-Wei Lin 王偉成 Wei-Cheng Wang |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 數學系 Department of Mathematics |
論文出版年: | 2003 |
畢業學年度: | 92 |
語文別: | 英文 |
論文頁數: | 30 |
中文關鍵詞: | 座標轉換系統 、解特徵值 、特徵向量 、量子 、能階 |
外文關鍵詞: | curvilinear coordinate system, interface problem, quantum dot, wave function, energy states, Jacobi-Davidson method |
相關次數: | 點閱:2 下載:0 |
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此篇論文提供了一個有效率的方法去算量子的能階分布.我們用了一種和接觸面相似的網格作為其中之一的座標系統,再用此網格轉換成另一種座標系統,兩種座標系統在用weight function融合後去作離散. 而離散之後所形成的矩陣會為對稱正定矩陣.最後再使用Jacobi-Davidson 的方法算其特徵值以及特徵向量.且所算出的特徵值會有二階精度.
Abstract
We present a simple and efficient numerical method for calculating bound state energies and their corresponding wave function of a axisymmetric 3D QD model. The Schrodinger equation of the model is discretized by using a body fitting curvilinear coordinate system. The result matrix is symmetric and positive definite. The resulting matrix eigenvalue problem is then solved by using a Jacobi-Davidson based method. The scheme is 2nd order accurate and converges extremely fast.
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