A set of electron-correlation energies as large as 10 eV have been measured for a magnetic 2 ML Fe film deposited on Ag(001). By exploiting the spin selectivity in angle-resolved Auger-photoelectron coincidence spectroscopy and the Cini-Sawatzky theory, the core-valence-valence Auger spectrum of a spin-polarized system have been resolved: correlation energies have been determined for each individual combination of the two holes created in the four subbands involved in the decay: majority and minority spin, as well as $e_g$ and $t_{2g}$. The energy difference between final states with parallel and antiparallel spin of the two emitted electrons is ascribed to the spin-flip energy for the final ion state, thus disentangling the contributions of Coulomb and exchange interactions.

中文翻译：

---

在铁磁铁薄膜的俄歇谱中测得的大电子相关性出乎意料：轨道选择的库仑和交换贡献。

对于沉积在Ag（001）上的2 ML铁磁性膜，已测量出一组高达10 eV的电子相关能。通过利用角度分辨俄歇光电子重合光谱法和Cini-Sawatzky理论中的自旋选择性，解决了自旋极化系统的核心价价俄歇谱：已经确定了每个独立组合的相关能。在与衰减有关的四个子带中创建了两个孔：多数和少数自旋，以及${Ë}_G$ 和 ${Ť}_{2G}$。两种发射电子具有平行和反平行自旋的最终状态之间的能量差归因于最终离子态的自旋翻转能量，从而消除了库仑和交换相互作用的贡献。