SHIFTS AND WIDTHS OF METAL-OVERLAYER QUANTUM-WELL STATES NEAR E(F) OBSERVED BY PHOTOEMISSION

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关键词: ANGLE-RESOLVED PHOTOEMISSION;    VALENCE-ELECTRON STATES;    NA OVERLAYERS;    SINGLE LAYER;    IMAGE STATES;    CU(111);    FILMS;    AG;    TEMPERATURE;    SCATTERING;   

DOI  :  10.1103/PhysRevB.50.8926

来源: SCIE

【 摘 要 】

Photoelectron energy spectra reveal discrete valence-electron states in the range 0-220 meV above E(F) for 1-3 atomic layers of Na on Cu(111). Apart from a stepwise dependence on the number of atomic Na layers the energy of the quantum-well states depends in a gradual manner on how full the layer is. The states are as well defined in energy as comparable surface states producing peak widths (50-90 meV), which depend on temperature and coverage.

【 授权许可】

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