论文标题
Fe/Coo/ag（001）铁 - /抗磁通界面的交换耦合中的电子相关效应
Electron correlation effects in the exchange coupling at the Fe/CoO/Ag(001) ferro-/antiferro-magnetic interface
论文作者
论文摘要
已利用角度分辨 - 高高 - 光电子的重合光谱（AR-APEC）来研究电子相关性在Ag（ag/001）上Fe/coo BiLayer生长的铁磁/抗磁性界面的交换耦合中扮演的作用（001）。经过实验确定了有效的相关能量u $ _ {\ textrm {eff}} $，通常用于评估核价值促进螺旋谱的能量分布，已通过实验确定轨道的每种可能组合（e $ _g $ _g $或t $ _ {2G} $），以及Spin（Martial或Minority Elect）的每种可能组合（E $ _g $ _g $或T $ _ {2G}库仑和交换相互作用已被鉴定，并将其与Fe/Ag系统获得的结果进行了比较。提出的分析在Fe/COO接口中揭示了E $ _g $ orbital的库仑相互作用以及T $ _ {2G} $ orbital的Fe/Ag case的交换相互作用，这些相对于可以与更强的电子限制以及在两个层之间相关的Fe/Ag情况。
Angle resolved-Auger-photoelectron coincidence spectroscopy (AR-APECS) has been exploited to investigate the role that electron correlation plays in the exchange-coupling at the ferromagnetic/antiferromagnetic interface of a Fe/CoO bilayer growth on Ag(001). The effective correlation energy U$_{\textrm{eff}}$, usually employed to assess the energy distribution of core-valence-valence Auger spectra, has been experimentally determined for each possible combination of the orbital (e$_g$ or t$_{2g}$) and the spin (majority or minority) of the two valence electrons involved in the Auger decay. Coulomb and exchange interactions have been identified and compared with the result obtained on the Fe/Ag system. The presented analysis reveals in the Fe/CoO interface an enhancement of the Coulomb interaction for the e$_g$ orbital and of the exchange interaction for the t$_{2g}$ orbital with respect to the Fe/Ag case that can be associated to the stronger electron confinement and to the exchange coupling between the two layers, respectively.
