Quest for Band Renormalization and Self-Energy in Correlated f-Electron Systems
2010 (English)In: Acta Physica Polonica. A, ISSN 0587-4246, Vol. 117, no 2, 264-267 p.Article in journal (Refereed) Published
Coexisting low-energy scales are observed in f-electron materials. The information about some of low-energy scales is imprinted in the electron self-energy, which can be measured by angle-resolved photoemission (ARPES). Such measurements in d-electron materials over the last decade were based on high energy- and momentum-resolution ARPES techniques used to extract the self-energy information from measured spectra. Simultaneously, many-body theoretical approaches have been developed to find a link between the self-energy and many-body interactions. Here we show the transcription of such methods from d-electrons to f-electrons by presenting the first example of low energy scales in the f-electron material USb2, measured with synchrotron-based ARPES. The proposed approach will help in answering the fundamental questions about the complex nature of the heavy fermion state.
Place, publisher, year, edition, pages
2010. Vol. 117, no 2, 264-267 p.
IdentifiersURN: urn:nbn:se:uu:diva-136891ISI: 000277950400003OAI: oai:DiVA.org:uu-136891DiVA: diva2:377776