结晶学
八面体
离子
物理
材料科学
化学
晶体结构
量子力学
作者
N. Spiridis,Jakub Barbasz,Zbigniew Łodziana,J. Korecki
标识
DOI:10.1103/physrevb.74.155423
摘要
High-quality and impurity-free magnetite surfaces with $(\ensuremath{\surd}2\ifmmode\times\else\texttimes\fi{}\ensuremath{\surd}2)R45\ifmmode^\circ\else\textdegree\fi{}$ reconstruction have been obtained for the ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}(001)$ epitaxial films deposited on $\mathrm{Fe}(001)$. Based on atomically resolved scanning tunneling microscopy images for both negative and positive sample polarity and density-functional-theory calculations, a model of the magnetite (001) surface terminated with Fe ions forming dimers on the reconstructed $(\ensuremath{\surd}2\ifmmode\times\else\texttimes\fi{}\ensuremath{\surd}2)R45\ifmmode^\circ\else\textdegree\fi{}$ octahedral iron layer is proposed.
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