Record link: 
http://hdl.handle.net/20.500.12708/170754
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Title: 
Quasiparticle evolution and pseudogap formation in V₂O₃: An infrared spectroscopy study
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Citation: 
Baldassarre, L., Perucchi, A., Nicoletti, D., Toschi, A., Sangiovanni, G., Held, K., Capone, M., Ortolani, M., Malavasi, L., Marsi, M., Metcalf, P., Postorino, P., & Lupi, S. (2008). Quasiparticle evolution and pseudogap formation in V₂O₃: An infrared spectroscopy study. Physical Review B, 77(113107). https://doi.org/10.1103/physrevb.77.113107
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Publisher DOI: 
10.1103/physrevb.77.113107
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Publication Type: 
Article - Original Research Article
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Language: 
English
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Authors: 
Baldassarre, L. 
Perucchi, A. 
Nicoletti, D. 
Toschi, A. 
Sangiovanni, G. 
Held, K. 
Capone, M. 
Ortolani, M. 
Malavasi, L. 
Marsi, M. 
Metcalf, P. 
Postorino, P. 
Lupi, S. 
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Organisational Unit: 
E138-01 - Forschungsbereich Computational Materials Science 
E138-02 - Forschungsbereich Correlations: Theory and Experiments 
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Journal: 
Physical Review B 
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ISSN: 
2469-9950
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Date (published): 
28-Mar-2008
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Number of Pages: 
4
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Publisher: 
AMER PHYSICAL SOC
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Peer reviewed: 
Yes
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Keywords: 
Condensed Matter Physics; Electronic, Optical and Magnetic Materials
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Abstract: 
The infrared conductivity of V2O3 is measured in the whole phase diagram. Quasiparticles appear above the Néel temperature TN and eventually disappear further enhancing the temperature, leading to a pseudogap in the optical spectrum above 425 K. Our calculations demonstrate that this loss of coherence can be explained only if the temperature dependence of lattice parameters is considered. V2O3 is therefore effectively driven from the "metallic" to the "insulating" side of the Mott transition as the temperature is increased.
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Research Areas: 
Non-metallic Materials: 20%
Metallic Materials: 20%
Computational Materials Science: 50%
Quantum Many-Body Systems: 10%
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Science Branch: 
Physik, Mechanik, Astronomie
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Appears in Collections:
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