Correlation-driven heavy-fermion formation in LiV2O4.
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 16, 167402.1-167402.4 p.Article in journal (Refereed) Published
Optical reflectivity measurements were performed on a single crystal of the d-electron heavy-fermion (HF) metal LiV2O4. Our results evidence the highly incoherent charge dynamics above T*≈20 K and the redistribution of the spectral weight of the optical conductivity over broad energy scales (∼5 eV) as the quantum coherence of the charge carriers is recovered. This reveals that LiV2O4 is close to a correlation-driven insulating state and indicates that, in sharp contrast to f-electron HF Kondo-lattice systems, strong electronic correlation effects dominate the heavy quasiparticle formation in LiV2O4
Place, publisher, year, edition, pages
2007. Vol. 99, no 16, 167402.1-167402.4 p.
IdentifiersURN: urn:nbn:se:uu:diva-15094DOI: 10.1103/PhysRevLett.99.167402PubMedID: 17995290OAI: oai:DiVA.org:uu-15094DiVA: diva2:42865