Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-09-20
Acta Physica Polonica A118 (2010) 736-737
Physics
Condensed Matter
Strongly Correlated Electrons
The paper was presented at the 14th Czech and Slovak Conference on Magnetism CSMAG'10 (6.-9. July 2010, Ko\v{s}ice, Slovakia)
Scientific paper
We consider the one-orbital $N$-site repulsive Hubbard model on two kagome-like chains, both of which yield a completely dispersionless (flat) one-electron band. Using exact many-electron ground states in the subspaces with $n\le n_{\max}$ ($n_{\max}\propto N$) electrons, we calculate the square of the total spin in the ground state to discuss magnetic properties of the models. We have found that although for $n
Derzhko Oleg
Honecker Andreas
Maksymenko Mykola
Moessner Richhild
Richter Jadwiga
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