Artículos de revistas
Circularly Polarized Photoluminescence as a Probe of Density of States in GaAs/AlGaAs Quantum Hall Bilayers
Fecha
2012Registro en:
PHYSICAL REVIEW LETTERS, COLLEGE PK, v. 109, n. 4, p. 221-231, 46204, 2012
0031-9007
10.1103/PhysRevLett.109.046802
Autor
Poussep, Iouri
Lavelli, Lara Fernandes dos Santos
Gusev, Gennady
Smirnov, D.
Bakarov, A. K.
Institución
Resumen
Polarized magnetophotoluminescence is employed to study the energies and occupancies of four lowest Landau levels in a couple quantum Hall GaAs/AlGaAs double quantum well. As a result, a magnetic field-induced redistribution of charge over the Landau levels manifesting to the continuous formation of the charge density wave and direct evidence for the symmetric-antisymmetric gap shrinkage at v = 3 are found. The observed interlayer charge exchange causes depolarization of the ferromagnetic ground state.