Role of surface and bulk plasmon decay in secondary electron emission

被引：45

作者：

Werner, Wolfgang S. M. ^{[1
]}

Ruocco, Alessandro ^{[2
,3
]}

Offi, Francesco ^{[2
,3
]}

Iacobucci, Stefano ^{[3
,4
]}

Smekal, Werner ^{[1
]}

Winter, Hannspeter ^{[1
]}

Stefani, Giovanni ^{[2
,3
]}

机构：

[1] Vienna Univ Technol, Inst Allgemeine Phys, A-1040 Vienna, Austria

[2] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[3] Univ Roma Tre, Unita CNISM, I-00146 Rome, Italy

[4] Area Ric Roma 1, Ist Sistemi Complessi, CNR, I-00016 Monterotondo, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 23期

基金：

奥地利科学基金会;

关键词：

aluminium; electron energy loss spectra; electron-surface impact; secondary electron emission; surface plasmons; work function;

D O I：

10.1103/PhysRevB.78.233403

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanism of secondary electron emission by impact of 100-eV electrons on an Al(100) surface has been investigated by measuring the secondary electron spectrum in coincidence with loss features in the spectrum of reflected electrons. Distinct peaks are observed at energies corresponding accurately to the surface and bulk plasmon energies minus the work function of the analyzer, demonstrating that plasmons excited by electron energy losses predominantly decay via creation of single-electron-hole pairs that act as a source for the secondary electron spectrum. These findings suggest a mechanism for emission of secondary electrons very similar to photoelectron (PE) emission, the difference being the step leading to electron liberation, i.e., plasmon decay in the present case versus photoionization in the case of PE.

引用

页数：4

共 32 条

[1] X-RAY PHOTOEMISSION FROM ALUMINUM [J].

BAER, Y ;

BUSCH, G .

PHYSICAL REVIEW LETTERS, 1973, 30 (07) :280-282

[2] Plasmon-assisted electron emission from Al and Mg surfaces by slow ions [J].

Baragiola, RA ;

Dukes, CA .

PHYSICAL REVIEW LETTERS, 1996, 76 (14) :2547-2550

[3] Plasmon decay mechanisms in proton-solid collisions [J].

Bocan, GA ;

Miraglia, JE .

PHYSICAL REVIEW A, 2005, 72 (04)

[4] ROLE OF PLASMON DECAY IN SECONDARY-ELECTRON EMISSION IN NEARLY-FREE-ELECTRON METALS - APPLICATION TO ALUMINUM [J].

CHUNG, MS ;

EVERHART, TE .

PHYSICAL REVIEW B, 1977, 15 (10) :4699-4715

[5] Can low-energy electrons affect high-energy physics accelerators? [J].

Cimino, R ;

Collins, IR ;

Furman, MA ;

Pivi, M ;

Ruggiero, F ;

Rumolo, G ;

Zimmermann, F .

PHYSICAL REVIEW LETTERS, 2004, 93 (01) :014801-1

[6] Two-dimensional optics with surface plasmon polaritons [J].

Ditlbacher, H ;

Krenn, JR ;

Schider, G ;

Leitner, A ;

Aussenegg, FR .

APPLIED PHYSICS LETTERS, 2002, 81 (10) :1762-1764

[7] Efficiency of local light-plasmon coupling [J].

Ditlbacher, H ;

Krenn, JR ;

Hohenau, A ;

Leitner, A ;

Aussenegg, FR .

APPLIED PHYSICS LETTERS, 2003, 83 (18) :3665-3667

[8] ELECTRON COINCIDENCE SPECTROSCOPY STUDIES OF SECONDARY AND AUGER-ELECTRON GENERATION MECHANISMS [J].

DRUCKER, J ;

SCHEINFEIN, MR ;

LIU, J ;

WEISS, JK .

JOURNAL OF APPLIED PHYSICS, 1993, 74 (12) :7329-7339

[9] Extraordinary optical transmission through sub-wavelength hole arrays [J].

Ebbesen, TW ;

Lezec, HJ ;

Ghaemi, HF ;

Thio, T ;

Wolff, PA .

NATURE, 1998, 391 (6668) :667-669

[10] Modeling of secondary emission processes in the negative ion based electrostatic accelerator of the International Thermonuclear Experimental Reactor [J].

Fubiani, G. ;

de Esch, H. P. L. ;

Simonin, A. ;

Hemsworth, R. S. .

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 2008, 11 (01)

← 1 2 3 4 →