Spin-Polarized Electron Spectroscopies of Magnetic Surfaces

利用自旋极化电子能量损失谱，结合极化源和散射电子的极化分析，研究磁性表面的电子结构。具体来说，他们将研究镍中斯通纳激发谱的温度依赖性，测量铬（100）表面的交换分裂，并利用薄氧化镍层探索自旋极化电子能量损失谱在探测反铁磁有序材料的电子结构方面的潜力。氧化镍是典型的反铁磁莫特绝缘体。此外，他们将通过角依赖自旋极化二次电子能谱研究清洁和吸附物覆盖表面的磁化曲线及其温度依赖性。

The electronic structure of magnetic surfaces will be studied by spin-polarized electron energy loss spectroscopy, combining a polarized source with polarization analysis of the scattered electrons. Specifically, they will study the temperature dependence of the Stoner excitation spectrum in nickel, measure the exchange splitting of the chromium(100) surface and explore the potential of spin-polarized Electron Energy Loss Spectroscopy in probing the electronic structure of antiferromagnetically ordered materials, using thin nickel oxide layers. Nickel oxide is the model antiferromagnetic Mott insulator. In addition, they will study the magnetization profile and its temperature dependence of clean and adsorbate covered surfaces by angle dependent spin polarized secondary electron spectroscopy.