Abstract
Voltage-controlled superlattice negative differential conductance (NDC) is observed in microwave impedance measurements of n-type GaAs/AlAs superlattices biased perpendicular to the layers. The electron transit time deduced from the peak NDC frequency is in good agreement with the velocity-field relation obtained from dc current-voltage measurements. The data also yield the criterions for the existence of dc or high-frequency NDC. Finally, a fine structure in the conductance-voltage data at low temperatures is interpreted in terms of inhibited perpendicular transport and high-field domain formation beyond the critical field.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
