Gate-induced band ferromagnetism in an organic polymer

Details Gate-induced band ferromagnetism in an organic polymer Gate-induced band ferromagnetism in an organic polymer

2001-08-27

arxiv.org/abs/cond-mat/0108413v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 7 figures

Scientific paper

10.1103/PhysRevLett.88.127202

We propose that a chain of five-membered rings (polyaminotriazole) should be ferromagnetic with an appropriate doping that is envisaged to be feasible with an FET structure. The ferromagnetism is confirmed by a spin density functional calculation, which also shows that ferromagnetism survives the Peierls instability. We explain the magnetism in terms of Mielke and Tasaki's flat-band ferromagnetism with the Hubbard model. This opens a new possibility of band ferromagnetism in purely organic polymers.

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