Optical spectroscopy and photoemission of - and -cerium from LDA+DMFT

✍ Scribed by Kristjan Haule; Gabriel Kotliar

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 184 KB
• Volume: 359-361
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2005.01.015

✦ Synopsis

Using a novel approach to calculate optical properties of strongly correlated systems, we address the old question of the physical origin of the a ! g transitions in Ce. We find that the Kondo collapse model, involving both the f and the spd electrons, describes the optical data better than a Mott transition picture involving the f electrons only. Our results compare well with existing experiments on thin films. We predict the optical spectra for both a and g phases of Ce and find the development of a hybridization pseudogap in the vicinity of the phase transition.