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Croatica Chemica Acta, Vol. 86 No. 4, 2013.

Original scientific paper

https://doi.org/10.5562/cca2323

U= ∞ Hubbard Model for 1D Frustrated Magnets

Vladyslav Olegovich Cheranovskii ; V. N. Karazin Kharkiv National University, Svobody Sq. 4, 61022, Kharkov, Ukraine
Elena Vladymirovna Ezerskaya ; V. N. Karazin Kharkiv National University, Svobody Sq. 4, 61022, Kharkov, Ukraine

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Abstract

The energy spectrum of Hubbard model with infinite repulsion on two types of distorted necklace
ladder with additional diagonal interactions is studied analytically and numerically. For the diamond
type lattice we demonstrate the appearance of magnetic polarons at negative ratio of hopping parameters
describing the interactions of neighbor unit cells. For second type of the lattice, despite of similar triangular
topology, the corresponding polarons have nonmagnetic character. (doi: 10.5562/cca2323)

Keywords

Hubbard model; infinite electron repulsion; magnetic polarons; nanomagnets

Hrčak ID:

112767

URI

https://hrcak.srce.hr/112767

Publication date:

16.12.2013.

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