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Charging efficiency and lifetime of image-bound electrons on a dielectric surface
2005
Applied Physics Letters
Preserved Fulltext
The surface charge generated on an Al 0.24 Ga 0.76 As/ GaAs quantum well sample by electron bombardment was monitored by measuring the change in the conductivity of the channel. Upon turning off the electron bombardment the surface charge on adsorbed layers of xenon and water at 8 K decays in room temperature darkness with a lifetime = 0.30± 0.02 s. The average charging efficiency, 0 , defined as the ratio of the charge collected by the surface to the beam current times the charging time, is 0
doi:10.1063/1.1906314
fatcat:ntaiij27xjh3lca33r7zhsocem