Magnetism and Phase Separation in Polymeric Hubbard Chains
- 6 March 1995
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 74 (10) , 1851-1854
- https://doi.org/10.1103/physrevlett.74.1851
Abstract
We study a class of one-dimensional chains whose topology leads to flatbands in the electronic spectrum. Using the Hubbard model, we find that these materials should exhibit ferrimagnetic ordering for a half-filled band, in agreement with a theorem by Lieb. Away from half filling the system displays a very rich magnetic phase diagram. Possible experimental realizations are suggested.Keywords
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