Quantitative determination of a nano-object's atom density without atomic resolution

Article

关键词: SCANNING TUNNELING MICROSCOPE;    METAL-SURFACES;    INVERSE-PHOTOEMISSION;    WORK FUNCTION;    ELECTRONIC EXCITATIONS;    STATES;    IMAGE;    MOLECULE;    AG(111);    ISLANDS;   

DOI  :  10.1103/PhysRevB.90.165418

来源: SCIE

【 摘 要 】

We outline a possibility to determine the adatom density of individual nano-objects via measurement of their electronic structure. For this aim, the nonlinear shift of image potential states measured on individual Cu nanoclusters on Ag(100) by low-temperature scanning tunneling spectroscopy is carefully analyzed. The quantitative analysis is confirmed by density-functional theory calculations. A peak width analysis furthermore reveals whether the clusters are purely metallic or alloyed.

【 授权许可】

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