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Nanoelectromechanical switch operating by tunneling of an entire C-60 molecule

Andrey Danilov (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; P. Hedegard ; Dmitry Golubev ; T. Bjornholm ; Sergey Kubatkin (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Nano Letters (1530-6984). Vol. 8 (2008), 8, p. 2393-2398.
[Artikel, refereegranskad vetenskaplig]

We present a solid state single molecule electronic device where switching between two states with different conductance happens predominantly by tunneling of an entire C-60 molecule. This conclusion is based on a novel statistical analysis of similar to 10(5) switching events. The analysis yields (i) the relative contribution of tunneling, current induced heating and thermal fluctuations to the switching mechanism, (ii) the voltage dependent energy barrier (similar to 100-200 meV) separating the two states of the switch and (iii) the switching attempt frequency, omega(0) corresponding to a 2.8 meV mode, which is most likely rotational.

Nyckelord: NEGATIVE DIFFERENTIAL RESISTANCE; SINGLE-MOLECULE; MOLECULAR JUNCTIONS



Denna post skapades 2009-01-06.
CPL Pubid: 83612

 

Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Mesoskopisk fysik

Chalmers infrastruktur