Dielectric screening and band-structure effects in low-energy photoemission

被引：41
|
作者：
Krasovskii, E. E. [1 ,2 ,3 ]
Silkin, V. M. [1 ,2 ,3 ]
Nazarov, V. U. [4 ]
Echenique, P. M. [1 ,2 ,5 ]
Chulkov, E. V. [1 ,2 ,5 ]
机构：
[1] Univ Pais Vasco Euskal Herriko Unibertsitatea, Fac Ciencias Quim, Dept Fis Mat, San Sebastian 20080, Basque Country, Spain
[2] DIPC, San Sebastian 20018, Basque Country, Spain
[3] Basque Fdn Sci, IKERBASQUE, Bilbao 48011, Spain
[4] Acad Sinica, Res Ctr Appl Sci, Taipei 115, Taiwan
[5] CSIC UPV EHU, Ctr Mixto, Ctr Phys Mat, CFM, San Sebastian 20018, Spain
来源：
PHYSICAL REVIEW B | 2010年 / 82卷 / 12期
关键词：
IMAGE POTENTIAL STATES; PHOTON FIELD; SURFACE; EXCITATION;
D O I：
10.1103/PhysRevB.82.125102
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nonlocal response of the surface to the incident light is included into an ab initio one-step photoemission theory. Surface-state normal emission spectra from Be(0001) and Al(100) are calculated by a full-potential scattering method and are found to agree well with the experiment in a wide energy range. The total exciting field is obtained within the random-phase approximation for jellium as well as for one-dimensional crystal models of the two surfaces. Material dependence of the multipole plasmon mode and strong effect of band structure on the photoyield is discussed.
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页数：5
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