Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study

Details Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study Quasiparticle evolution and pseudogap formation in V2O3: An infrared spectroscopy study

2007-10-05

arxiv.org/abs/0710.1247v2

PHYSICAL REVIEW B 77, 113107 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.77.113107

The infrared conductivity of V2O3 is measured in the whole phase diagram. Quasiparticles appear above the Neel 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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