The isostructural metal-insulator transition in Cr-doped V2O3 is the textbook example of a Mott-Hubbard transition between a paramagnetic metal and a paramagnetic insulator. We review recent theoretical calculations as well as experimental findings which shed new light on this famous transition. In particular, the old paradigm of a doping-pressure equivalence does not hold, and there is a microscale phase separation for Cr-doped V2O3.
@article{arxiv.1303.2050,
title = {Mott-Hubbard transition in V2O3 revisited},
author = {P. Hansmann and A. Toschi and G. Sangiovanni and T. Saha-Dasgupta and S. Lupi and M. Marsi and K. Held},
journal= {arXiv preprint arXiv:1303.2050},
year = {2013}
}
Comments
16 pages, 11 figures, Feature Article which reviews recent calculations and experiments which shed a new light on the famous Mott-Hubbard transition in V2O3. To appear in physica status solidi (b) 2013