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Effective Dimensionality and Band Structure of alpha-Nav_2o_5 Compound: 1D or 2D?

V. A. Ivanov·Z. V. Popovic·P. Khuong·V. V. Moshchalkov
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Abstract

The AV_nO_{2n+1} mixed valence compounds (n=1, A=Na) are classified as dimerized layered system with strongly interacting d-electrons of vanadium ions. The derived band gaps, energy dispersion relations and density of electronic states are in a good agreement with available experimental and theoretical data. The correlated band gap provides the insulating state of the high-temperature alpha-NaV_2O_5 phase whereas the state, earlier misrepresented as the spin-Peierls state, is governed, in fact, by opening of the Coulomb gap.

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V. A. Ivanov, Z. V. Popovic, P. Khuong, V. V. Moshchalkov. 1999-09-03. Effective Dimensionality and Band Structure of alpha-Nav_2o_5 Compound: 1D or 2D?. https://arxiv.org/abs/cond-mat/9909046

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