Ground-State Spin of Hubbard Ladder Model with Infinite Electron Repulsion Conference Paper

abstract

• We apply perturbation theory and cyclic spin permutation formalism to study the lowest energy states of the infinite-repulsion Hubbard model on n-leg ladders with alternating values of one-site energies i for neighboring rungs. We establish the "ferromagnetic" character of ladder ground-state at electron densities in the interval 1 - (2n)-1 1 and sufficiently large alternation of one-site energies of neighbor rungs of the ladder. We also show the stability of this state against the small deviations of the values of i in contrast to the case of two-leg ladder formed by weakly interacting neighbor rungs with equal one-site energies.

authors

• Klein, Douglas

published proceedings

• ACTA PHYSICA POLONICA A

author list (cited authors)

• Cheranovskii, V. O., Ezerskayaa, E. V., Klein, D. J., & Tokarev, V. V.

citation count

• 0

complete list of authors

• Cheranovskii, VO||Ezerskayaa, EV||Klein, DJ||Tokarev, VV

publication date

• April 2017

publisher

• Institute of Physics, Polish Academy of Sciences  Publisher

published in

• Acta Physica Polonica, Series A: General Physics, Physics of Condensed Matter, Optics and Quantum Electrodynamics  Journal

keywords

• 49 Mathematical Sciences
• 51 Physical Sciences

Digital Object Identifier (DOI)

• 10.12693/APhysPolA.131.916

start page

• 916

end page

• 918

volume

• 131

issue

• 4

URL

• http://dx.doi.org/10.12693/aphyspola.131.916