Landau level transitions in InAs/AlSb/GaSb quantum wells
Wu Xiao-Guang†a), Pang Mib)
       
Panel (a) shows the energy of some Landau level transitions (open circles) versus the magnetic field for the QW:130/10/50 quantum well. The widths of InAs, AlSb, and GaSb layers are 130, 10, and 50 angstrom, respectively. Panel (b) shows the energy levels versus the magnetic field for the same quantum well structure. These transitions are from states with energy lower than 0.105 eV to states with energy higher than 0.105 eV. The size of the open circles in panel (a) is proportional to the corresponding transition strength π x . At a fixed magnetic field, the first three most dominant transitions according to the corresponding π x values are colored red, green, and blue. The corresponding initial-states and final-states of the Landau level transitions are indicated in panel (b) with the same color. The initial-states are marked as open circles, the final-states are marked as open squares or open diamonds.