The Electronic Structure Of Solids Studies Using Angle Resolved Photoemission Spectroscopy

The Electronic Structure of Solids Studies Using Angle Resolved Photoemission Spectroscopy

Modern Techniques of Surface Science

This is a fully revised and expanded edition of a very successful and widely used book. It describes the physical basis of all the principal, and most of the more specialised, techniques currently employed in the study of well-characterised solid surfaces. The coverage of each technique, illustrated with selected examples, is underpinned by discussion of the relevant physical principles, and the complementary aspects of the various methods are also described. Throughout, the emphasis is on understanding the concepts involved, rather than on an exhaustive review of applications. The book will be of great use to final year undergraduate and postgraduate students in physics, chemistry and materials science. It will also be valuable to established researchers in any area of surface science concerned with the acquisition and analysis of experimental data.

Angle Resolved Photoemission Spectroscopy of Delafossite Metals

This thesis describes the results of angle resolved photoemission spectroscopy experiments on delafossite oxide metals, and theoretical work explaining these observations. The study was motivated by the extraordinarily high conductivity of the non-magnetic delafossites PdCoO2 and PtCoO2, the measurement of whose electronic structure is reported and discussed. Two unexpected effects were observed in the course of the investigation; each is described and analysed in detail. Firstly, a previously unrecognised type of spectroscopic signal, allowing the non-magnetic probe of photoemission to become sensitive to spin-spin correlations, was observed in the antiferromagnetic PdCrO2. Its origin was identified as the Kondo-like coupling of itinerant and Mott insulating electrons. Furthermore, surface states exhibiting an unusually large Rashba-like spin-splitting were observed on the transition metal terminated surfaces of delafossites. The large inversion symmetry breaking energy scale, a consequence of the unusual structure of the surface layer, is identified as the origin of the effect.