Microwave conductivity of a confined superlattice

✍ Scribed by X.L. Lei; N.J.M. Horing; H.L. Cui

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 165 KB
• Volume: 14
• Category: Article
• ISSN: 0749-6036
• DOI: 10.1006/spmi.1993.1132

✦ Synopsis

Microwave small-signal mobility of vertical conduction in the presence of a dc bias is investigated for cylindrically confined superlattices having various transverse diameters. At finite (\mathrm{dc}) bias the differential mobility exhibits peculiar frequency-dependence, which stems from a decrease of the average inverse effective mass of carriers in conjunction with an increase of their average longitudinal energy, and is characterized approximately by a momentum and an energy relaxation time. It is found that the effective energy-relaxation time increases significantly as the transverse dimensions of the superlattice increase.