40 citations · 143 across the 12 of their papers we have counts for
7 papers · 1 filter
Driven dissipative dynamics of spins in quantum dots
Frederico Brito, Harry Westfahl, Amir O. Caldeira +1
We have studied the dissipative dynamics of a driven electronic spin trapped in a quantum dot. We consider the dissipative mechanism as due to the indirect coupling of the electron…
Forward Scattering Approximation and Bosonization in Integer Quantum Hall Systems
M. Rosenau da Costa, H. Westfahl, A. O. Caldeira
In this work we present a model and a method to study integer quantum Hall (IQH) systems. Making use of the Landau levels structure we divide these two dimensional systems into a s…
A bosonization approach for bilayer quantum Hall systems at ν_T = 1
R. L. Doretto, A. O. Caldeira, C. Morais Smith
We develop a non-perturbative bosonization approach for bilayer quantum Hall systems at ν_T = 1, which allows us to systematically study the existence of an exciton condensate in t…
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…
Dissipative dynamics of spins in quantum dots
Harry Westfahl, Amir O. Caldeira, Gilberto Medeiros-Ribeiro +1
We present a theory for the dissipation of electronic spins trapped in quantum dots due to their coupling to the host lattice acoustic phonon modes. Based on the theory of dissipat…