Photoelectron driven acoustic surface plasmons in p(2x2)K/Be(0001): Ab initio calculations

被引：11
|
作者：
Silkin, V. M. [1 ,2 ,3 ,4 ]
Hellsing, B. [5 ]
Wallden, L. [6 ]
Echenique, P. M. [1 ,2 ,3 ]
Chulkov, E. V. [1 ,2 ,3 ]
机构：
[1] Univ Basque Country, Fac Ciencias Quim, Depto Fis Mat, San Sebastian 20080, Spain
[2] Univ Basque Country, Fac Ciencias Quim, Ctr Mixto, CSIC,EHU, San Sebastian 20080, Spain
[3] DIPC, San Sebastian 20018, Spain
[4] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain
[5] Univ Gothenburg, Dept Phys, Gothenburg, Sweden
[6] Chalmers Univ, Dept Appl Phys, Gothenburg, Sweden
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 11期
关键词：
ELECTRONIC-STRUCTURE; METAL-SURFACES; BAND-STRUCTURE; THIN-FILMS; BE(0001); STATE; EXCITATION; GAS;
D O I：
10.1103/PhysRevB.81.113406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report on low-energy dynamical surface response properties of the p(2x2)K/Be(0001) system calculated within a first-principles approach. It is shown that a partly occupied adsorbate-induced quantum-well band dramatically affects the dynamical properties of the beryllium surface. We demonstrate clear evidence that the observed anomalous features in photoemission spectra of this and a similar system can be explained by acoustic surface plasmon excitations.
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页数：4
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