Individual Na Adatoms on TiO2(110)-(1×1) Surface Observed Using Kelvin Probe Force Microscope
Individual Na Adatoms on TiO2(110)-(1×1) Surface Observed Using Kelvin Probe Force Microscope
复制标题
使用开尔文探针力显微镜观察 TiO2(110)-(1×1) 表面上的单个 Na Adamtoms
DOI：
10.1143/jjap.43.4647
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发表时间：
2004
影响因子：
1.5
通讯作者：
Hiroshi Onishi Hiroshi Onishi
中科院分区：
文献类型：
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作者：
A. Sasahara;H. Uetsuka;Hiroshi Onishi Hiroshi Onishi
利用开尔文探针力显微镜（KPFM）绘制了na -沉积TiO2（110）表面的功函数图。单个的Na附着原子被鉴定为二氧化钛表面原子平梯田上的地形突出物。每个adatom上的功函数局部减小0.1 ~ 0.5 eV。观察到的功函数的调制用电子从附原子转移到衬底所引起的电永久偶极矩来解释。
The work function of Na-deposited TiO2(110) surfaces was mapped using a Kelvin probe force microscope (KPFM). Individual Na adatoms were identified as topographic protrusions on atomically flat terraces of the TiO2 surface. The work function locally decreased by 0.1–0.5 eV on each adatom. The observed modulations of work function were interpreted with the electric permanent dipole moment caused by the electron transfer from the adatom to the substrate.