Decoherence effects in propagation of optically generated electron-hole pairs in image potential states

被引：19

作者：

Gumhalter, B

Petek, H

机构：

[1] Univ Zagreb, Inst Phys, Zagreb 10001, Croatia

[2] Hitachi Ltd, Adv Res Lab, Hatoyama, Saitama 3500395, Japan

来源：

SURFACE SCIENCE | 2000年 / 445卷 / 2-3期

基金：

美国国家科学基金会;

关键词：

copper; electron density excitation spectra calculations; Green's function methods; low index single crystal surfaces; metallic surfaces; photoelectron emission; semi-empirical models and model calculations; visible/ultraviolet absot ption spectroscopy;

D O I：

10.1016/S0039-6028(99)01037-7

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 discuss some many-body aspects of optically induced electronic transitions taking place in the first step of two-photon photoemission from Cu(1 1 1) surfaces. Transient and decoherence effects associated with the creation and spatio-temporal propagation of an electron-hole pair generated in the Shockley occupied surface state and image potential bands of the surface image potential (IP-SS 'exciton') are assessed by combining the effective model Hamiltonian approach with the formalism of nonadiabatic response. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：195 / 208

页数：14

共 49 条

[41] IMAGE-LIKE SCREENING MECHANISMS FOR WEAKLY ADSORBED ATOMS [J].