Mott-Hubbard transition in V2O3 revisited
P. Hansmann, A. Toschi, G. Sangiovanni, T. Saha-Dasgupta, S. Lupi, M., Marsi, K. Held
TL;DR
This paper revisits the Mott-Hubbard transition in V2O3, highlighting new experimental and theoretical insights that challenge old paradigms and reveal microscale phase separation in Cr-doped V2O3.
Contribution
It provides a comprehensive review of recent findings, overturning previous assumptions about doping-pressure equivalence and revealing microscale phase separation.
Findings
Doping-pressure equivalence does not hold in Cr-doped V2O3
Recent studies reveal microscale phase separation
New insights challenge traditional understanding of the transition
Abstract
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.
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