Ft. Vasko et P. Vasilopoulos, MAGNETO-OSCILLATORY PHENOMENA IN DOUBLE-QUANTUM WELLS WITH ASYMMETRICSCATTERING .2. LONGITUDINAL TRANSPORT-COEFFICIENTS, Physical review. B, Condensed matter, 48(24), 1993, pp. 18095-18100
Shubnikov-de Haas oscillations and cyclotron resonance absorption are
considered for quasiclassical magnetic fields and very low temperature
s in tunnel-coupled quantum wells with asymmetric short-range scatteri
ng. The two sets of Landau levels, separated by the splitting Delta(T)
between the left and right levels, lead to two series bf peaks with d
ifferent periods and widths. In addition, the conductivity shows oscil
lations as function of Delta(T). The cyclotron resonance peak shows pe
culiar characteristics when both sets of Landau levels cross the Fermi
energy.