Dynamical properties of graphite and peculiar behaviour of the low-energy plasmon

被引：12

作者：

Portail, M ^{[1
]}

Carrere, M ^{[1
]}

Layet, JM ^{[1
]}

机构：

[1] Univ Aix Marseille 1, Fac Sci St Jerome, Lab PIIM, Equipe Plasma Surface,CNRS,UMR 6633, F-13397 Marseille 20, France

来源：

SURFACE SCIENCE | 1999年 / 433卷

关键词：

electron energy loss spectroscopy; electron-solid interaction; graphite; phonon; plasmon;

D O I：

10.1016/S0039-6028(99)00091-6

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 revisit the electronical and dynamical properties of the graphite, studied by high-resolution energy electron loss spectroscopy (HREELS). We measured both the low-energy plasmon and the phonon modes, and we report a non-dielectric behaviour of the plasmon for primary energies in the range of 6-190 eV. Whereas we can follow the dispersion of the phonon modes, it appears impossible to obtain information about plasmon dispersion for \q(parallel to)\ above 0.18 Angstrom(-1). We compare our results with theoretical expectations and we discuss the nature of the excitation of the plasmon. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：863 / 867

页数：5

共 13 条

[1] Plasmon excitations and accumulation layers in heavily doped InAs(001) [J].

Bell, GR ;

McConville, CF ;

Jones, TS .

PHYSICAL REVIEW B, 1996, 54 (04) :2654-2661

[2]

FONTAINE M, 1993, THESIS U AIX MARSEIL

[3] THE EFFECT OF INHOMOGENEOUS DOPANT PROFILES ON THE ELECTRON-ENERGY LOSS SPECTRA OF SI(100) [J].

FORSTER, A ;

LAYET, JM ;

LUTH, H .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1988, 47 (01) :95-97

[4]

FORSTER A, 1989, APPL SURF SCI, V41, P30

[5] COMPETING ROUTES FOR CHARGE-TRANSFER IN COADSORPTION OF K AND O2 ON GRAPHITE [J].

HOCK, KM ;

BARNARD, JC ;

PALMER, RE .

PHYSICAL REVIEW LETTERS, 1993, 71 (04) :641-644

[6] Electronic and geometric structure of Cs on graphite (0001) [J].

Hunt, MRC ;

Durston, PJ ;

Palmer, RE .

SURFACE SCIENCE, 1996, 364 (03) :266-272

[7]

IBACH H, 1972, ELECT ENERGY LOSS SP

[8]

Ibach H., 1991, ELECT ENERGY LOSS SP

[9] TEMPERATURE-DEPENDENT PLASMON FREQUENCY AND LINEWIDTH IN A SEMIMETAL [J].

JENSEN, ET ;

PALMER, RE ;

ALLISON, W ;

ANNETT, JF .

PHYSICAL REVIEW LETTERS, 1991, 66 (04) :492-495

[10] Plasmon dispersion and damping at the surface of a semimetal [J].

Laitenberger, P ;

Palmer, RE .

PHYSICAL REVIEW LETTERS, 1996, 76 (11) :1952-1955

← 1 2 →