Photoemission as a probe of the collective excitations in condensed matter systems

Abstract

Recent advances in photoemission are allowing detailed studies of the role of collective many-body excitations in the decay of a photohole. These collective excitations include phonons, charge density waves and magnetic or spin excitations. With these developments angle resolved photoemission with its momentum resolving capabilities has become a powerful probe of the transport properties in condensed matter systems. We review these advances and examine the application of high resolution photoemission to studies of both metallic systems and the new high-Tc superconductors. © 2007 Springer.