2011-09-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/697994摘要：由於維度縮小所造成在磁性及磁傳輸的奇特行為，及未來在奈米元件、奈米儲存上的應用潛力，低維度磁性奈米結構在近年來受到廣泛的興趣及討論。本計畫期望使用新開發的自旋極化穿隧掃瞄顯微鏡（SP-STM）及自旋極化穿隧掃瞄能譜（SP-STS）去探討低維度磁性材料的微觀磁性結構。作為一個較有效的起始點，計畫的第一部份是利用上述儀器探測各種類面心立方錳磁性超薄膜的微觀磁性結構。在同時我們亦將現有的SP-STM做更一步的升級。計畫的第二部分主要探討磁性奈米粒子的微觀自旋結構及耐米粒子之間的微觀相互作用。利用自旋極化穿隧掃瞄顯微鏡（SP-STM）及自旋極化穿隧掃瞄能譜（SP-STS）探討鐵磁層對有機分子自旋極化的影響則是本計畫的最終目的。<br> Abstract: Low dimensional magnetic nanostructure attracts much interest not only due to its novel magnetic behavior and transport properties with reduced dimensionality, but also due to its potential application in nanodevice and nanostorage. The goal of this project is to probe the microscopic spin configuration of low dimensional magnetic nanostructures by the new developed spin-polarized scanning tunneling microscopy (SP-STM) and spin-polarized scanning tunneling spectroscopy (SP-STS) techniques. For the first part of this project, as the effective starting point for the SP-STM, we will focus on probing the spin configuration of antiferromagnetic Mn ultrathin films with different face-center-cubic(fcc)-like crystalline structures. At the same time, we also want to upgrade our SP-STM technique to the MR mode with ring shape and lock-in technique. In second, we will try to probe the spin configuration of novel ferromagnetic or antiferromagnetic nanostructures such as isolated nanoparticles assembly. Finally, using SP-STM and SP-STS to measure the influence of FM layer on the spin-polarization of the novel organic molecule will be our final goal.