89 citations
- Cornell UniversityUS3 papers
- Universidade Federal Rural de PernambucoBR3 papers
- Universidade de São PauloBR2 papers
- Universidade Federal de SergipeBR2 papers
- Binghamton UniversityUS1 paper
- Centre National de la Recherche ScientifiqueFR1 paper
- Instituto Nacional de Matemática Pura e AplicadaBR1 paper
- KU LeuvenBE1 paper
- Laboratoire de Mathématiques Jean LerayFR1 paper
- Leipzig UniversityDE1 paper
- Nantes UniversitéFR1 paper
- Rutgers, The State University of New JerseyUS1 paper
4 papers · 1 filter
Magnetism and Electronic Correlations in Quasi-One-Dimensional Compounds
M. D. Coutinho-Filho, R. R. Montenegro-Filho, E. P. Raposo +2
In this contribution on the celebration of the 80th birthday anniversary of Prof. Ricardo Ferreira, we present a brief survey on the magnetism of quasi-one-dimensional compounds. T…
Frustration-induced quantum phase transitions in a quasi-one-dimensional ferrimagnet: Hard-core boson map and the Ton ks-Girardeau limit
R. R. Montenegro Filho, M. D. Coutinho-Filho
We provide evidence of a superfluid-insulator transition (SIT) of magnons in a quasi-one-dimensional quantum ferrimagnet with {\it isotropic} competing antiferromagnetic spin inter…
Doped AB_2 Hubbard Chain: Spiral, Nagaoka and RVB States, Phase Separation and Luttinger Liquid Behavior
R. R. Montenegro-Filho, M. D. Coutinho-Filho
We present an extensive numerical study of the Hubbard model on the doped AB chain, both in the weak coupling and the infinite-U limit. Due to the special unit cell topology, t…
Quasi-One-Dimensional Quantum Ferrimagnets
R. R. Montenegro-Filho, M. D. Coutinho-Filho
We present an exact diagonalization study of the half-filled Hubbard model on bipartite quasi-one-dimensional lattices. In particular, we emphasize the dependence of the ferrimagne…