期刊
PHYSICAL REVIEW B
卷 85, 期 19, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.195450
关键词
-
资金
- Center for Atomic Level Catalyst Design, an Energy Frontier Research Center
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001058]
Antiphase domain boundaries (APDBs) in the (root 2 x root 2)R45 degrees reconstruction of the Fe3O4(001) surface were investigated using scanning tunneling microscopy (STM) and density functional theory [(DFT) + U] calculations. The equilibrium structure of the APDBs is interpreted in terms of the distorted B-layer model for the (root 2 x root 2)R45 degrees reconstruction in which a lattice distortion couples to charge order in the subsurface layers. The APDBs are observed after prolonged annealing at 700 degrees C, indicating that they are extremely stable. DFT + U calculations reveal that the APDB structure is linked to a disruption in the subsurface charge-order pattern, leading to an enrichment of Fe2+ cations at the APDB. Simulated STM images reproduce the appearance of the APDBs in the experimental data and reveal that they are preferential adsorption sites for hydrogen atoms.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据