| 研究生: |
邱建誌 Chiu, Chien-Chih |
|---|---|
| 論文名稱: |
Bloch方程式和LLG方程式解的對應關係 The correspondence between solutions of the Bloch equation and the LLG equation |
| 指導教授: |
陳家駒
Chen, Chia-Chu |
| 學位類別: |
碩士 Master |
| 系所名稱: |
理學院 - 物理學系 Department of Physics |
| 論文出版年: | 2008 |
| 畢業學年度: | 96 |
| 語文別: | 中文 |
| 論文頁數: | 39 |
| 中文關鍵詞: | Landau-Lifshitz-Gilbert 方程式 、Bloch 方程式 、Brouder 轉換 |
| 外文關鍵詞: | Bloch Equation, Landau-Lifshitz-Gilbert Equation, Brouder Transformation |
| 相關次數: | 點閱:110 下載:4 |
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Brouder給出一套轉換方式將Bloch 方程式的解轉換為Landau-Lifshitz-Gilbert方程式的解, 並建立了兩個方程式解之間的對應關係; 本論文以Brouder 轉換為基礎而建立反轉換, 使得LLG 方程式的解可以對應到複數Bloch 方程的解, 並且探討Bloch 方程式、複數Bloch 方程式、LLG 方程式的解, 以及其對應關係。此外, 利用密度矩陣, 我們還討論了磁矩系統中消相干現象與阻尼效應的關係。
Brouder introduces a transformation which maps a solution of the Bloch equation into a solution of the LLG equation. This transformation shows a correspondence between these solutions of the two equations. Based on Brouder’s transformation, this thesis constructs an inverse transformation which maps a solution of the LLG equation into a solution of the complex Bloch equation. Then, we discuss the correspondence between solutions of the Bloch equation, the LLG equation, and the Complex Bloch Equation.
Besides this, using a density matrix, we show the relation between the decoherence and the damping effect in magnetic moment systems.
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