title: Electrical current switching in single CdSe nanorods.
abstract: Electrical current measurements through individually wired colloidal CdSe nanorods exhibit pronounced multistability. This current switching is analogous to the widely observed fluorescence intermittency in similar systems and may be associated with surface charge dynamics. Such association is quantitatively established for the case when the current is bistable, where the probability of the sojourn time t at the high or low current state follows an exponential dependence. Remarkably, this behavior can be modeled by charging dynamics of a single surface trap, whose position could be estimated from the intermittent current-voltage characteristics. The methodology presented here provides a unique route for charge dynamic sensing at the nanoscale, where the nanorod senses its own surface charge.
authors.affiliation: Institute of Chemistry, The Hebrew University, Jerusalem, Israel.
authors.forename: Hadar
authors.initials: H
authors.lastname: Steinberg
authors.forename: Omri
authors.initials: O
authors.lastname: Wolf
authors.forename: Adam
authors.initials: A
authors.lastname: Faust
authors.forename: Asaf
authors.initials: A
authors.lastname: Salant
authors.forename: Yigal
authors.initials: Y
authors.lastname: Lilach
authors.forename: Oded
authors.initials: O
authors.lastname: Millo
authors.forename: Uri
authors.initials: U
authors.lastname: Banin