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.

引用

页数：4

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