Authors Referees APS Members |
December 2007, to be published in Physical Review B15
Theory of the orbital-selective Mott transition in ferromagnetic YTiO$_3$
under high pressure
We explore the effect of pressure on the electronic properties of the ferromagnetic Mott-Hubbard insulator \yts. 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, multi-orbital electronic correlations in the real crystal structure of \yts. 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. © 2008 The American Physical Society.
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