227 citations · 739 across the 37 of their papers we have counts for
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Structural transition, spontaneous formation of strong singlet dimers and metamagnetism in magnetoelastic spin chains
C. J. Gazza, A. A. Aligia, A. O. Dobry +2
We study a one-dimensional antiferromagnetic-elastic model with magnetic ions having spin . By extensive DMRG computations and complementary analytical methods, we uncover a…
Double frustration and magneto-electro-elastic excitations in collinear multiferroic materials
D. C. Cabra, A. O. Dobry, C. J. Gazza +1
We discuss a model scenario for multiferroic systems of type II (collinear spins) where the electric dipolar order competes with a frustrated magnetic order in determining the elas…
Topological solitons and bulk polarization switch in collinear type II multiferroics
D. C. Cabra, A. O. Dobry, C. J. Gazza +1
We introduce a microscopic model for collinear multiferroics capable to reproduce, as a consequence of magnetic frustration and easy-axis anisotropy, the so-called "uudd" (or antip…
Microscopic model for magneto-electric coupling through lattice distortions
D. C. Cabra, A. O. Dobry, C. J. Gazza +1
We propose a microscopic magneto-electric model in which the coupling between spins and electric dipoles is mediated by lattice distortions. The magnetic sector is described by a s…
Topological Kondo insulators in one dimension: Continuous Haldane-type ground-state evolution from the strongly-interacting to the non-interacting limit
Franco T. Lisandrini, Alejandro M. Lobos, Ariel O. Dobry +1
We study, by means of the density-matrix renormalization group (DMRG) technique, the evolution of the ground state in a one-dimensional topological insulator, from the non-interact…
Topological quantum phase transition in strongly correlated Kondo insulators in 1D
Franco T. Lisandrini, Alejandro M. Lobos, Ariel O. Dobry +1
We investigate, by means of a field-theory analysis combined with the density-matrix renormalization group (DMRG) method, a theoretical model for a strongly correlated quantum syst…