Theory of the orbital-selective Mott transition in ferromagnetic YTiO3 under high pressure
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چکیده
We explore the effect of pressure on the electronic properties of the ferromagnetic Mott-Hubbard insulator YTiO3. We show that the pressure-induced insulator-metal transition is accompanied by anisotropic structural changes driven by the competition between strongly orbital dependent one-electron hopping and strong, multiorbital electronic correlations in the real crystal structure of YTiO3. Our results are relevant for the general understanding of the intricate and interdependent changes in the orbital and magnetic structure of correlated ferromagnetic insulators showing Mott transitions.
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تاریخ انتشار 2008