Energy dependence of resonant charge transfer from adsorbates to metal substrates

被引:28
作者
Föhlisch, A
Menzel, D
Feulner, P
Ecker, M
Weimar, R
Kostov, KL
Tyuliev, G
Lizzit, S
Larciprete, R
Hennies, F
Wurth, W
机构
[1] Univ Hamburg, Inst Expt Phys, D-27761 Hamburg, Germany
[2] Tech Univ Munich, Phys Dept E20, D-85747 Garching, Germany
[3] Bulgarian Acad Sci, Inst Gen & Inorgan Chem, BU-1113 Sofia, Bulgaria
[4] Sincrotrone Trieste, I-34012 Trieste, Italy
关键词
D O I
10.1016/S0301-0104(02)00939-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We have investigated the resonant charge transfer from an adsorbed Ar atom in an electronically excited 2p(3/2)(5)4s(1) state into different metal substrates, i.e., Ag(111), Ni(111) and Cu(111). Using the so-called core hole clock method we have been able to determine the resonant charge transfer times for the three systems. They differ roughly by a factor of two with the fastest transfer time being observed for Ni(111) and the slowest for Ag(111). Furthermore we observe strong energy dependences of the charge transfer times across the resonances which are opposite to the expectations from a simple tunneling model, or from a detuning induced shortening of the interaction time. Possible reasons for the observed behavior are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:107 / 115
页数:9
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