An extension of Tasaki's flat-band Hubbard model

Details An extension of Tasaki's flat-band Hubbard model An extension of Tasaki's flat-band Hubbard model

2003-04-12

arxiv.org/abs/cond-mat/0304295v4

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages,3figures

Scientific paper

10.1088/0305-4470/36/42/003

We present a new class of flat-band Hubbard models which have saturated
ferromagnetic ground states at two distinct electron numbers for different
values of parameters. The models are extensions of Tasaki's flat-band models.

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