227 citations · 739 across the 37 of their papers we have counts for
37 papers
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…
The effect of nitriding on the humidity sensing properties of hydrogenated amorphous carbon films
Giuliano Frattini, Sindry Torres, Leonel I Silva +3
We have studied the effect of nitriding on the humidity sensing properties of hydrogenated amorphous carbon (a-C:H) films. The films were prepared in two stages combining the techn…
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…