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19942026
most citedObservation of a Large-scale Anisotropy in the Arrival Directions of Cosmic Rays above eV

409 citations

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Showing 2007 · cond-mat.str-elShow all

5 papers · 2 filters

cond-mat.str-el2007★ 10 cited

Spin polaron in the J1-J2 Heisenberg model

I. J. Hamad, A. E. Trumper, A. E. Feiguin +1

We have studied the validity of the spin polaron picture in the frustrated J1-J2 Heisenberg model. For this purpose, we have computed the hole spectral functions for the Neel, coll…

cond-mat.str-el2007★ 2 cited

Magnetic and transport properties of the one-dimensional ferromagnetic Kondo lattice model with an impurity

S. Costamagna, J. A. Riera

We have studied the ferromagnetic Kondo lattice model (FKLM) with an Anderson impurity on finite chains with numerical techniques. We are particularly interested in the metallic fe…

cond-mat.str-el2007★ 4 cited

Dimerization process and elementary excitations in spin-Peierls chains coupled by frustrated interactions

D. Mastrogiuseppe, C. Gazza, A. Dobry

We consider the ground state and the elementary excitations of an array of spin-Peierls chains coupled by elastic and magnetic interactions. It is expected that the effect of the m…

cond-mat.str-el2007★ 39 cited

Incommmensurability and unconventional superconductor to insulator transition in the Hubbard model with bond-charge interaction

A. A. Aligia, A. Anfossi, L. Arrachea +6

We determine the quantum phase diagram of the one-dimensional Hubbard model with bond-charge interaction X in addition to the usual Coulomb repulsion U at half-filling. For large e…

cond-mat.str-el2007★ 3 cited

Spectroscopic fingerprints of the frustrated magnetic order in Li2VOSiO4: a t-J model study

I. J. Hamad, A. E. Trumper, L. O. Manuel

We have analyzed theoretically the photoemission spectra of the insulating compound Li2VOSiO4.Recently, this compound has been proposed as the first experimental realization of the…