Mott transition and suppression of orbital fluctuations in orthorhombic 3$d^1$ perovskites

E. Pavarini, S. Biermann, A. Poteryaev +3

Using $t_{2g}$ Wannier-functions, a low-energy Hamiltonian is derived for orthorhombic $3d^1$ transition-metal oxides. Electronic correlations are treated with a new implementati…