Electron Energy Loss Spectroscopy and Surface Vibrations - 1st Edition - ISBN: 9780123693501, 9781483259451

Electron Energy Loss Spectroscopy and Surface Vibrations

1st Edition

Authors: H. Ibach D. L. Mills
eBook ISBN: 9781483259451
Imprint: Academic Press
Published Date: 28th May 1982
Page Count: 378
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Electron Energy Loss Spectroscopy and Surface Vibrations is devoted to electron energy loss spectroscopy as a probe of the crystal surface. Electrons with energy in the range of a few electron volts sample only a few atomic layers. As they approach or exit from the crystal, they interact with the vibrational modes of the crystal surface, or possibly with other elementary excitations localized there. The energy spectrum of electrons back-reflected from the surface is thus a rich source of information on its dynamics. The book opens with a detailed analysis of the physics that controls the operation of the monochromator, which is the core of the experimental apparatus. Separate chapters follow on the interaction of electrons with vibrational modes of the surface region and with other elementary excitations in the vicinity; the lattice dynamics of clean and adsorbate-covered surfaces, with emphasis on those features of particular relevance to surface vibrational spectroscopy; and selected applications vibration spectroscopy in surface physics and chemistry.

Table of Contents



Chapter 1 Introduction

1.1 General Remarks

1.2 A Comparison of Surface Vibration Spectroscopies

1.3 The Electron Energy Loss Method of Surface Vibrational Spectroscopy: Introductory Remarks


Chapter 2 Instrumentation

2.1 Physical Requirements of Spectrometers

2.2 Energy Dispersive Systems

2.3 The Analysis of the Cylindrical Deflector

2.4 Space-Charge Effects

2.5 Space-Charge Effects on the Cylindrical Deflector

2.6 Other Electrostatic Geometries

2.7 Background

2.8 Some Further Technical Aspects


Chapter 3 Basic Theory of Electron Energy Loss Spectroscopy

3.1 General Remarks

3.2 Small-Angle Inelastic Scattering by Dipole Fields

3.3 Bulk Losses in the Regime of Small-Angle Scattering

3.4 Surface Losses

3.5 The Impact Scattering Regime

3.6 Technical Remarks


Chapter 4 Vibrational Motion of Molecules Adsorbed on the Surface

4.1 General Remarks

4.2 Theory of the Vibrational Normal Modes of Adsorbed Molecules

4.3 Elements of Group Theory

4.4 Molecular Vibrations and Surface Point Groups

4.5 Some Principles in Mode Assignment


Chapter 5 Vibrations at Crystal Surfaces; Ordered Adsorbate Layers and the Clean Surface

5.1 General Remarks

5.2 Formal Description of the Vibrations of Ordered Adsorbate Layers on Crystals

5.3 The Study of Surface Phonons by Electron Energy Loss Spectroscopy

5.4 Anharmonicity and Double Losses


Chapter 6 Applications of Vibration Spectroscopy in Surface Physics and Chemistry

6.1 General Remarks

6.2 Vibration Spectroscopy and the Determination of Adsorption Sites

6.3 Frequency Shifts

6.4 Overtones and Bond Energy

6.5 Chemical Analysis of Adsorbed Species


Chapter 7 Outlook


Appendix A Evaluation of the Function P(Q||,w) for the Two-Layer Model


Appendix B Vibrational Frequencies of Selected Molecules


Appendix C Conversion of Frequency Units



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© Academic Press 1982
Academic Press
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About the Author

H. Ibach

D. L. Mills

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