Shuttle instability in self-assembled Coulomb blockade nanostructures
chenwenkuipc 添加于 2012-2-8 15:41
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作 者
Isacsson A, Gorelik LY, Voinova MV, Kasemo B, Shekhter RI, Jonson M 摘 要
We study a simple model of a self-assembled, room temperature Coulomb-blockade nanostructure containing a metallic nanocrystal or grain connected by soft molecular links to two metallic electrodes. Self-excitation of periodic grain vibrations at 10-100 GHz is shown to be possible for a sufficiently large bias voltage leading to a novel 'shuttle mechanism' of discrete charge transfer and a current through the nanostructure proportional to the vibration frequency. For the case of weak electromechanical coupling an analytical approach is developed which together with Monte Carlo simulations shows that the shuttle instability for structures with high junction resistances leads to hysteresis in the current-voltage characteristics. (C) 1998 Elsevier Science B.V. All rights reserved.-
详细资料
- 文献种类:期刊
- 期刊名称: PHYSICA B-CONDENSED MATTER
- 期卷页: 1998年 第255卷 150-163页
- 日期: 1998
- ISBN: 0921-4526 %/ ELSEVIER SCIENCE BV
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