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Magnetic properties of multiband U=infinity Hubbard model on anisotropic triangular and rectangular lattice strips
Date
1998-11-01
Author
CHERANOVSKII, VO
Esentürk, Okan
PAMUK, HO
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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We study the dependence of the ground state spin of a multiband Hubbard model with infinite electron repulsion on anisotropic triangular and rectangular lattice strips on the model parameters. Considering the results of numerical calculations for the exact spectra of finite triangular lattice strips at different values of hopping integrals, we show the existence of a type of magnetic transitions with the jump of the ground state spin between minimal and maximal values. This transition is found only for special filling factors and when the lattice anisotropy parameter takes some critical value, which depends on the size of the lattice strip. Near this critical point two states with marginal values of the total spin, both of which can be a ground state before or after the transition, are locally stable against a few flips of spins. [S0163-1829(98)04241-6].
Subject Keywords
Ferromagnetism
,
States
URI
https://hdl.handle.net/11511/46258
Journal
PHYSICAL REVIEW B
DOI
https://doi.org/10.1103/physrevb.58.12260
Collections
Department of Chemistry, Article