25 citations · 47 across the 5 of their papers we have counts for
5 papers
Dissipative dynamics of topological defects in frustrated Heisenberg spin systems
V. Juricic, L. Benfatto, A. O. Caldeira +1
We study the dynamics of topological defects of a frustrated spin system displaying spiral order. As a starting point we consider the SO(3) nonlinear sigma model to describe long-w…
Spin-excitations of the quantum Hall ferromagnet of composite fermions
R. L. Doretto, M. O. Goerbig, P. Lederer +2
The spin-excitations of a fractional quantum Hall system are evaluated within a bosonization approach. In a first step, we generalize Murthy and Shankar's Hamiltonian theory of the…
NMR linewidth and Skyrmion localization in quantum Hall ferromagnets
A. Villares Ferrer, R. L. Doretto, A. O. Caldeira
The non-monotonic behavior of the NMR signal linewidth in the 2D quantum Hall system is explained in terms of the interplay between skyrmions localization, due to the influence of…
Photoluminescence spectrum of an interacting two-dimensional electron gas at ν=1
R. L. Doretto, A. O. Caldeira
We report on the theoretical photoluminescence spectrum of the interacting two-dimensional electron gas at filling factor one (ν=1). We considered a model similar to the one adopte…
Lowest Landau level bosonization
R. L. Doretto, A. O. Caldeira, S. M. Girvin
We develop a bosonization scheme for the two-dimensional electron gas in the presence of an uniform magnetic field perpendicular to the two-dimensional system when the filling fact…