Ferromagnetic Ground State of Two-Band Hubbard Model with One Electron per Site
نویسندگان
چکیده
منابع مشابه
Ferromagnetic Domain Wall and Spiral Ground States in One-Dimensional Deformed Flat-Band Hubbard Model
We construct a set of exact ground states with a localized ferromagnetic domain wall and an extended spiral structure in a quasi-one-dimensional deformed flatband Hubbard model. In the case of quarter filling, we show the uniqueness of the ground state with a fixed magnetization. The ground states with these structures are degenerate with the all-spin-up and all-spin-down states. This property ...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1997
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.91.367