Principles for the design and operation of a molecular wire transistor

被引:14
作者
Emberly, E [1 ]
Kirczenow, G [1 ]
机构
[1] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada
关键词
D O I
10.1063/1.1315627
中图分类号
O59 [应用物理学];
学科分类号
摘要
We explore theoretically the fundamental principles of design and operation of a three-terminal molecular wire transistor that consists of a single pi-conjugated carbon chain molecule with thiol end groups (CnHn-2S4), self-assembled on the cleaved edge of a multilayer of alternating thin gold and insulating films. The ends of the chain bond to two outer gold layers that act as source and drain, and the chain bridges a third (inner) gold layer that acts as a gate. We show that transistor action should occur in this device if sulfur atoms are adsorbed on the surface of the gold gate. The sulfur atoms acquire charge as the gate voltage is increased, thereby enhancing the interaction between the gate and molecule and creating a strong potential barrier that hinders electron flow along the molecular wire. (C) 2000 American Institute of Physics. [S0021-8979(00)05022-2].
引用
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页码:5280 / 5282
页数:3
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