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arXiv · 0904.0233

Interplay of electronic correlations and lattice instabilities in BaVS3

Kwang-Yong Choi·Dirk Wulferding·Helmuth Berger·Peter Lemmens
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Abstract

The quasi-one-dimensional metallic system BaVS3 with a metal-insulator transition at T_MI=70 K shows large changes of the optical phonon spectrum, a central peak, and an electronic Raman scattering continuum that evolve in a three-step process. Motivated by the observation of a strongly fluctuating precursor state at high temperatures and orbital ordering and a charge gap at low temperatures we suggest a concerted action of the orbital, electronic, and lattice subsystems dominated by electronic correlations.

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Kwang-Yong Choi, Dirk Wulferding, Helmuth Berger, Peter Lemmens. 2009-04-01. Interplay of electronic correlations and lattice instabilities in BaVS3. https://doi.org/10.1103/physrevb.80.245108

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