Artículos de revistas
QUANTUM HALL FERROMAGNET IN A DOUBLE WELL WITH VANISHING g-FACTOR.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, v.23, n.Dez/13, p.2933-2937, 2009
Armas, Luis Enrique Gómez
Lamas, Tomás Erikson
BAKAROV, A. K.
PORTAL, J. C.
We have studied the quantum Hall effect in Al(x)Ga(1-x)As-double well structure with vanishing g-factor. We determined the density-magnetic field n(s) - B diagrams for the longitudinal resistance R(xx). In spite of the fact that the n(s) - B diagram for conventional GaAs double wells shows a striking similarity with the theory, we observed the strong difference between these diagrams for double wells with vanishing g-factor. We argue that the electron-electron interaction is responsible for unusual behavior of the Landau levels in such a system.