Exact result on the Mott transition in a two-dimensional model of strongly correlated electrons.
نویسنده
چکیده
France We study the properties of a quarter-filled system of electrons on a square lattice interacting through a local repulsion U and a nearest-neighbour repulsion V in the limit V = +∞. We identify the ground-state for U large enough and show that domain walls appear below a critical value U c = 4t/π. We argue that this corresponds to a metal-insulator transition due to Mott localization.
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عنوان ژورنال:
- Physical review. B, Condensed matter
دوره 49 19 شماره
صفحات -
تاریخ انتشار 1994