Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/42765
Title: Electron tunnelling through single azurin molecules can be on/off switched by voltage pulses
Authors: Baldacchini, Chiara 
Kumar, Vivek
Bizzarri, Anna Rita 
Cannistraro, Salvatore 
Journal: APPLIED PHYSICS LETTERS 
Issue Date: 2015
Abstract: 
Redox metalloproteins are emerging as promising candidates for future bio-optoelectronic and nano-biomemory devices, and the control of their electron transfer properties through external signals is still a crucial task. Here, we show that a reversible on/off switching of the electron current tunnelling through a single protein can be achieved in azurin protein molecules adsorbed on gold surfaces, by applying appropriate voltage pulses through a scanning tunnelling microscope tip. The observed changes in the hybrid system tunnelling properties are discussed in terms of long-sustained charging of the protein milieu.
URI: http://hdl.handle.net/2067/42765
ISSN: 1077-3118
DOI: 10.1063/1.4919911
Appears in Collections:A1. Articolo in rivista

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