Correlation between STM-induced photon emission and barrier height:: The case of the Cu3Au alloy vicinal surface

被引：8

作者：

Silly, F ^{[1
]}

Gusev, AO ^{[1
]}

Le Goff, E ^{[1
]}

Barbier, L ^{[1
]}

Charra, F ^{[1
]}

机构：

[1] CEA Saclay, Serv Phys & Chim Surfaces & Interfaces, F-91191 Gif Sur Yvette, France

来源：

EUROPHYSICS LETTERS | 2003年 / 64卷 / 04期

关键词：

D O I：

10.1209/epl/i2003-00235-7

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The photon emission induced by STM on the vicinal Cu3Au(1, 1, 13) surface is found to present a yield comparable to pure Au. The control of the chemical ordering process permits to obtain ordered phases with a surface exhibiting either a paired-stepped structure with mixed Cu-Au terraces over a pure Cu atomic plane or a facetted structure. The STM-induced luminescence intensity of both surface types presents a high contrast between terraces and step edges. The photon emission efficiency is strongly correlated with the local barrier height, itself being influenced by local chemical characteristics and step distribution.

引用

页码：475 / 481

页数：7

共 23 条

[1] THE ROLE OF PROXIMITY PLASMON MODES ON NOBLE-METAL SURFACES IN SCANNING TUNNELING MICROSCOPY [J].

BERNDT, R ;

GIMZEWSKI, JK .

SURFACE SCIENCE, 1992, 269 :556-559

[2] PHOTON-EMISSION IN SCANNING-TUNNELING-MICROSCOPY - INTERPRETATION OF PHOTON MAPS OF METALLIC SYSTEMS [J].

BERNDT, R ;

GIMZEWSKI, JK .

PHYSICAL REVIEW B, 1993, 48 (07) :4746-4754

[3] ORDER-DISORDER AND SEGREGATION BEHAVIOR AT THE CU3AU(001) SURFACE [J].

BUCK, TM ;

WHEATLEY, GH ;

MARCHUT, L .

PHYSICAL REVIEW LETTERS, 1983, 51 (01) :43-46

[4] PHOTON-EMISSION EXPERIMENTS WITH THE SCANNING TUNNELLING MICROSCOPE [J].

COOMBS, JH ;

GIMZEWSKI, JK ;

REIHL, B ;

SASS, JK ;

SCHLITTLER, RR .

JOURNAL OF MICROSCOPY-OXFORD, 1988, 152 :325-336

[5] Circular dichroism in STM-excited luminescence on metals [J].

deParga, ALV ;

Alvarado, SF .

EUROPHYSICS LETTERS, 1996, 36 (08) :577-582

[6] Two-sphere model of photon emission from the scanning tunneling microscope [J].

Downes, A ;

Taylor, ME ;

Welland, ME .

PHYSICAL REVIEW B, 1998, 57 (11) :6706-6714

[7] STM-induced light emission of supported silver nanocrystallites [J].

Dumas, P ;

Syrykh, C ;

Makarenko, V ;

Salvan, F .

EUROPHYSICS LETTERS, 1997, 40 (04) :447-452

[8] Steps on the Au/Cu(111) surface studied by local work function measurement with STM [J].

Jia, JF ;

Hasegawa, Y ;

Inoue, K ;

Yang, WS ;

Sakurai, T .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1998, 66 (Suppl 1) :S1125-S1128

[9] THEORY FOR LIGHT-EMISSION FROM A SCANNING TUNNELING MICROSCOPE [J].

JOHANSSON, P ;

MONREAL, R ;

APELL, P .

PHYSICAL REVIEW B, 1990, 42 (14) :9210-9213

[10] APPARENT BARRIER HEIGHT IN SCANNING TUNNELING MICROSCOPY [J].

LANG, ND .

PHYSICAL REVIEW B, 1988, 37 (17) :10395-10398

← 1 2 3 →