CO (a3 Π) quenching at a metal surface: Evidence of an electron transfer mediated mechanism

被引：9

作者：

Graetz, Fabian ^{[1
,2
,3
]}

Engelhart, Daniel P. ^{[1
,2
]}

Wagner, Roman J. V. ^{[1
,2
]}

Meijer, Gerard ^{[3
]}

Wodtke, Alec M. ^{[1
,2
]}

Schaefer, Tim ^{[1
,2
]}

机构：

[1] Max Planck Inst Biophys Chem, Karl Friedrich Bonhoeffer Inst, D-37077 Gottingen, Germany

[2] Univ Gottingen, Inst Phys Chem, D-37077 Gottingen, Germany

[3] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

JOURNAL OF CHEMICAL PHYSICS | 2014年 / 141卷 / 04期

基金：

美国国家科学基金会;

关键词：

MULTIQUANTUM VIBRATIONAL-EXCITATION; BORN-OPPENHEIMER APPROXIMATION; ENERGY GRAZING COLLISIONS; METASTABLE STATES; IMPACT EXCITATION; SHAPE RESONANCE; CHARGE-TRANSFER; CROSS-SECTIONS; SOLID-SURFACES; MOLECULES;

D O I：

10.1063/1.4887777

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 observe a strong influence of molecular vibration and surface temperature on electron emission promoted by the de-excitation of metastable CO(a(3) Pi) on a clean Au(111) surface using a molecular beam surface scattering apparatus. The de-excitation is independent of incidence translational energy. These observations appear incompatible with existing theories of metastable particle de-excitation on metal surfaces, which are based on the Auger effect. Instead, they strongly suggest a mechanism involving formation of a transient anion whose lifetime is similar to the vibrational period of the CO molecule. (C) 2014 AIP Publishing LLC.

引用

页数：7

共 53 条

[1] Electron collisions with CO: Elastic and vibrational excitation cross sections [J].

Allan, M. .

PHYSICAL REVIEW A, 2010, 81 (04)

[2] VARIATIONAL CALCULATION OF IMAGE POTENTIAL NEAR A METAL SURFACE [J].

APPELBAU.JA ;

HAMANN, DR .

PHYSICAL REVIEW B, 1972, 6 (04) :1122-&

[3] Energy transfer at metal surfaces: the need to go beyond the electronic friction picture [J].

Bartels, Christof ;

Cooper, Russell ;

Auerbach, Daniel J. ;

Wodtke, Alec M. .

CHEMICAL SCIENCE, 2011, 2 (09) :1647-1655

[4] Observation of orientation-dependent electron transfer in molecule-surface collisions [J].

Bartels, Nils ;

Golibrzuch, Kai ;

Bartels, Christof ;

Chen, Li ;

Auerbach, Daniel J. ;

Wodtke, Alec M. ;

Schaefer, Tim .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2013, 110 (44) :17738-17743

[5] Decelerating neutral dipolar molecules [J].

Bethlem, HL ;

Berden, G ;

Meijer, G .

PHYSICAL REVIEW LETTERS, 1999, 83 (08) :1558-1561

[6] SECONDARY ELECTRON YIELDS FROM CU-BE-O SURFACE BY THERMAL CO, N2, AND NOBLE GAS METASTABLES [J].

BORST, WL .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1971, 42 (10) :1543-&

[7] THE DETECTION OF THE 2 PI-STAR ORBITAL OF CO AND NO CHEMISORBED ON NI(111) BY SURFACE PENNING IONIZATION ELECTRON-SPECTROSCOPY [J].

BOZSO, F ;

ARIAS, J ;

YATES, JT ;

MARTIN, RM ;

METIU, H .

CHEMICAL PHYSICS LETTERS, 1983, 94 (03) :243-246

[8] The Auger effect [J].

Burhop, EHS .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1935, 148 (A864) :0272-0284

[9] CORE-LEVEL BINDING-ENERGY AND DENSITY OF STATES FROM SURFACE ATOMS OF GOLD [J].

CITRIN, PH ;

WERTHEIM, GK ;

BAER, Y .

PHYSICAL REVIEW LETTERS, 1978, 41 (20) :1425-1428

[10] Reversible photomechanical switching of individual engineered molecules at a metallic surface [J].

Comstock, Matthew J. ;

Levy, Niv ;

Kirakosian, Armen ;

Cho, Jongweon ;

Lauterwasser, Frank ;

Harvey, Jessica H. ;

Strubbe, David A. ;

Frechet, Jean M. J. ;

Trauner, Dirk ;

Louie, Steven G. ;

Crommie, Michael F. .

PHYSICAL REVIEW LETTERS, 2007, 99 (03)

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