ALKALI CORE-LEVEL BINDING-ENERGY SHIFTS IN ALKALI 4D-METAL INTERFACE SYSTEMS

被引：17

作者：

LUNDGREN, E ^{[1
]}

QVARFORD, M ^{[1
]}

NYHOLM, R ^{[1
]}

ANDERSEN, JN ^{[1
]}

HESKETT, D ^{[1
]}

机构：

[1] UNIV RHODE ISL,DEPT PHYS,KINGSTON,RI 02881

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.50.4711

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoemission from different alkali core levels (Na 2p, K 3p, Rb 4p, and Cs 4d) has been studied for thin alkali films deposited on four different 4d metal surfaces: Mo(110), Rh(111), Rh(110), and Pd(100). Alkali atoms at the interface, the bulk, and at the surface of the adsorbed alkali him are found to have different core-level binding energies. It is found that the core-level binding-energy shifts of the alkali metals induced by the 4d-metal substrate increase with increasing atomic number of the alkali metal and with increasing atomic number of the 4d metal. Thermodynamical quantities such as interface segregation energies and adhesion energies are deduced from the layer-resolved shifts. Estimates of the experimental binding-energy shifts are given using semiempirical calculations, and certain complications in doing that are discussed.

引用

页码：4711 / 4717

页数：7

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