2011-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/688940摘要：自旋流模型大致可以解釋多長程序系統(multiferroics)的主要現象，本計劃將仔細分 析自旋流模型，並且著重於計算其電偶極強度，許多具有自旋鏈的化合物中也有多長 程序的現象，因此自旋鏈的物理性質也是本計畫研究的目標。我們希望能分析許多種 自旋鏈的基態和激發態，來釐清多長程序的機制，並研究自旋鏈上的自旋傳輸和自旋 流，此外，外場對自旋鏈和電偶極的影響也是本計畫的課題。 <br> Abstract: We are going to study the spin current model of multiferroics. The magnitude of electric polarization is one of the main goals of our calculation. The spin configuration of a spin chain is also related to the spin current and hence, ferroelectricity. We will try to find the ground states and excited states of various spins with the spinor method and study the spin transport and spin current on the spin chains. Finally, we will try to calculate the effect of external field. How it can change the spin states and the direction of electric polarization.自旋流多長程序系統氧化物spin currentmultiferroicsoxides