NS1: Nano/surface physics I: Atomic Structure

Module title: Nano/surface physics I--Atomic Structure (NS1)

Module convenor: Phil Woodruff (Warwick)

This course is concerned the structural properties of surfaces. As this is the first course in the 'nano/surface physics set of modules it includes a brief introduction to some of the general issues of surface science but then concentrates on structural aspects. The first part of this is a brief review of some of the phenomenology - what kinds of structural effects arise at surfaces and, in very general terms, why. The remaining (bulk) of the course is concerned with laying down the basics of surface crystallography and describing the physical principles and methodology of a range of experimental methods used to obtain this structural information.

A summary syllabus is as follows:
• Why special surface techniques? Surface sensitivity & surface specificity
• Overview of surface structural phenomena: relaxation (especially metals), reconstruction (mainly covalent and ionic solids), adsorption phenomena, reconstruction, structure & bonding
• Methods of surface structure determination: theory and practice
* Diffraction from 2D-periodic systems & comparison with 3D periodicity; Low energy electron
diffraction; Surface X-ray diffraction
* Local electron scattering methods: photoelectron diffraction and surface EXAFS. Elemental
and chemical-state specificity
* Ion scattering methods: Low, medium and high energy ion scattering. Surface and
sub-surface structure
* Scanning Tunnelling Microscopy: why not see where the atoms are? …is seeing believing?

NB a grid failure occurred in the lecture on Monday 27 October, after which contact was re-established between Warwick and Nottingham but not with Birmingham. The material covered after the reconnection was that of slides 73-77 and a pdf version of these slides with added notes is now available for download for the particular benefit of students based in Birmingham.

06/10/2008 - 09:00