Surface screening and lifetime of image states on Li(110)

被引：12

作者：

Chulkov, EV

Osma, J

Sarría, I

Silkin, VM

Pitarke, JM

机构：

[1] Univ Basque Country, Euskal Herriko Unibertsitatea, Dept Fis Mat, San Sebastian 20080, Spain

[2] Euskal Herriko Unibertsitatea, Mat Kondentsatuaren Fis Saila, Zientzi Fak, Bilbao 48080, Spain

来源：

SURFACE SCIENCE | 1999年 / 433卷

关键词：

alkali metals; low index single crystal surfaces; surface electronic phenomena;

D O I：

10.1016/S0039-6028(99)00148-X

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 here present the calculation results of the lifetime tau = (h) over bar/Gamma of the n = 1, 2 image states on the Li(110) surface. The linewidth Gamma of an image state is evaluated as the imaginary part of the electron self-energy Sigma projected over the state itself. The GW approximation is utilized for the calculation of Sigma. Different approximations are used to clarify the role of the surface screening on the lifetime of image states. The n = 1 image state lifetime is found to be of 18 fs, which is very close to both theoretical and experimental predictions of the lifetime of the first image state on Cu(111). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：882 / 885

页数：4

共 16 条

[1] Image potential states on lithium, copper and silver surfaces [J].

Chulkov, EV ;

Silkin, VM ;

Echenique, PM .

SURFACE SCIENCE, 1997, 391 (1-3) :L1217-L1223

[2] Lifetimes of image-potential states on copper surfaces [J].

Chulkov, EV ;

Sarria, I ;

Silkin, VM ;

Pitarke, JM ;

Echenique, PM .

PHYSICAL REVIEW LETTERS, 1998, 80 (22) :4947-4950

[3] LIFETIME IN A TWO-DIMENSIONAL IMAGE-POTENTIAL-INDUCED ELECTRON BAND [J].

DEANDRES, P ;

ECHENIQUE, PM ;

FLORES, F .

PHYSICAL REVIEW B, 1987, 35 (09) :4529-4532

[4] EXISTENCE AND DETECTION OF RYDBERG STATES AT SURFACES [J].

ECHENIQUE, PM ;

PENDRY, JB .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (10) :2065-2075

[5] LIFETIME OF IMAGE SURFACE-STATES [J].

ECHENIQUE, PM ;

FLORES, F ;

SOLS, F .

PHYSICAL REVIEW LETTERS, 1985, 55 (21) :2348-2350

[6] SELF-CONSISTENT STATIC-DENSITY-RESPONSE FUNCTION OF A METAL-SURFACE IN DENSITY-FUNCTIONAL THEORY [J].

EGUILUZ, AG .

PHYSICAL REVIEW B, 1985, 31 (06) :3303-3314

[7]

FAUSTER T, 1995, ELECTROMAGNETIC WAVE, V2, P350

[8]

Hedin L., 1969, Solid State Physics, Advanced in Research and Applications, V23, DOI [10.1016/S0081-1947(08)60615-3, DOI 10.1016/S0081-1947(08)60615-3]

[9]

Himpsel F. J., 1986, Comments on Condensed Matter Physics, V12, P199

[10] Time-resolved coherent photoelectron spectroscopy of quantized electronic states on metal surfaces [J].

Hofer, U ;

Shumay, IL ;

Reuss, C ;

Thomann, U ;

Wallauer, W ;

Fauster, T .

SCIENCE, 1997, 277 (5331) :1480-1482

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