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Correlation-driven heavy-fermion formation in LiV2O4.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Materials Science, Materials Physics.
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2007 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 99, no 16, p. 167402.1-167402.4Article in journal (Refereed) Published
Abstract [en]

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

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Place, publisher, year, edition, pages
2007. Vol. 99, no 16, p. 167402.1-167402.4
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Physical Sciences
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URN: urn:nbn:se:uu:diva-15094DOI: 10.1103/PhysRevLett.99.167402PubMedID: 17995290OAI: oai:DiVA.org:uu-15094DiVA, id: diva2:42865
Available from: 2008-05-27 Created: 2008-05-27 Last updated: 2017-12-11Bibliographically approved

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Jönsson, Petra

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