Self-oscillations in weakly coupled GaAs/AlGaAs superlattices at 77.3 K

77.3 K Self-oscillations is described in a 30-period weakly coupled GaAs/[Al.sub.0.3][Ga.sub.0.7]As superlattice (SL). The analysis of frequency spectra of self-oscillations under external sinusoidal force in frequency-locked regime at different fixed voltages has showed that current oscillations detected in the structureless regions of the I-V characteristic of weakly coupled SLs are forced oscillations.