Nanoelectromechanical Switch Operating by Tunneling of an Entire C60 Molecule

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• 作者：Andrey V. Danilov ; Per Hedegå ; rd ; Dmitrii S. Golubev ; Thomas Bj&#248 ; rnholm ; Sergey E. Kubatkin
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：August 2008
• 年：2008
• 卷：8
• 期：8
• 页码：2393-2398
• 全文大小：269K
• 年卷期：v.8,no.8(August 2008)
• ISSN：1530-6992

文摘

We present a solid state single molecule electronic device where switching between two states with different conductance happens predominantly by tunneling of an entire C₆₀ molecule. This conclusion is based on a novel statistical analysis of ∼10⁵ 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 (∼100−200 meV) separating the two states of the switch and (iii) the switching attempt frequency, ω₀, corresponding to a 2.8 meV mode, which is most likely rotational.