Electron-Exchange Processes in the Excitations of NiO(100) Surface d States.
Electron-Exchange Processes in the Excitations of NiO(100) Surface d States.
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NiO(100) 表面 d 态激发中的电子交换过程。
DOI：
10.1103/physrevlett.77.1548
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发表时间：
1996
影响因子：
8.6
通讯作者：
Kisker
中科院分区：
文献类型：
--
作者：
Fromme.;Möller;Anschütz;Bethke;Kisker
用“完全”自旋极化电子能量损失谱研究了NiO(10 0)中Ni2+表面离子d−d跃迁的电子交换过程.表面激发和体激发表现出完全不同的散射几何关系，为区分它们提供了可能性。除了众所周知的0.6 eV表面态外，在2.1 eV激发能下的损耗结构被确认为表面激发。利用共振初级能量，在1.3 eV处发现了一个新的激发，该激发归属于B13→A2 3表面激发。
Electron exchange processes in d− d transitions of the Ni 2+-surface ions in NiO (100) had been examined by “complete” spin-polarized electron-energy-loss spectroscopy. Surface and bulk excitations show a completely different scattering geometry dependence, providing the possibility to distinguish between them. Besides the well-known 0.6 eV surface state, the loss structure at 2.1 eV excitation energy was identified as surface excitation. By use of the resonance primary energies, a new excitation at 1.3 eV was found, which was assigned to the B 1 3→ A 2 3 surface excitation.