Planar vanadium oxide clusters: two-dimensional evaporation and diffusion on Rh(111).
Planar vanadium oxide clusters: two-dimensional evaporation and diffusion on Rh(111).
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DOI：
10.1103/physrevlett.92.206103
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发表时间：
2004-05
影响因子：
8.6
通讯作者：
J. Schoiswohl;G. Kresse;S. Surnev;M. Sock;M. Ramsey;F. Netzer
中科院分区：
文献类型：
--
作者：
J. Schoiswohl;G. Kresse;S. Surnev;M. Sock;M. Ramsey;F. Netzer
报道了在Rh（111）金属表面上通过氧化二维蒸发从钒氧化物纳米结构形成新型钒氧化物簇分子。通过高分辨扫描隧道显微镜（STM）和从头算密度泛函理论（ABINITIO DensityFunctionalTheory）计算，研究了平面V6O12团簇的结构和稳定性，以及二维蒸发过程的物理起源.簇的表面扩散已经遵循在高温STM实验中，并已提取的扩散参数，表明整个表面稳定的簇单元的跳跃扩散。
The formation of novel vanadium oxide cluster molecules by oxidative two-dimensional evaporation from vanadium oxide nanostructures is reported on a Rh(111) metal surface. The structure and stability of the planar V6O12 clusters and the physical origin of their 2D evaporation process have been elucidated by high-resolution scanning tunneling microscopy (STM) and ab initio density functional theory calculations. The surface diffusion of the clusters has been followed in elevated-temperature STM experiments, and the diffusion parameters have been extracted, indicating diffusion by hopping of the entire surface stabilized cluster units.