The Unconventional Influence of a Nearby Molecule onto Transport of Single C60 Molecule Transistor^*

Abstract

We study the transport property of single C60 molecular transistors with special focus on the situation that other molecules are in vicinity. The devices are prepared using electromigration and thermal deposition techniques. Pure single C60 molecule transistors show typical coulomb blockade behavior at low temperature. When we increase the coverage of molecules slightly by extending the deposition time, the transport spectrum of devices displays a switching behavior in the general coulomb blockade pattern. We attribute this unconventional phenomenon to the influence from a nearby C60 molecule. By analyzing this transport behavior quantitatively based on the parallel-double-quantum-dot model, the interaction from the nearby molecule is proved to be of capacity and tunneling coupling. Thermal stimulation is also applied to the device to investigate the effect of local charging environment variation on intermolecular interaction.

Single-electron transport in H2O@C60 single-molecule transistors

“…[35] Due to the large gap between the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) of H 2 O@C 60 and C 60 , we only access one degeneracy point, which is consistent with the previous studies. [6,21,22,40,41] 0.5 1.0 1.5 2.0 2.5 3.0 0 S) V g (V)…”

“…[1][2][3][4] In an SMT, a gate electric field is utilized to control the electrostatic potential and hence the charging state of the single molecule. [5,6] Among the molecules of interest as candidates, fullerenes and their derivatives are highlighted by their unique cage-like structures where multiple atomic or molecular species may be embedded. [7][8][9][10][11][12][13][14][15][16][17][18] SMTs based on C 60 and its derivatives have been shown to exhibit distinctive properties, such as nanomechanical oscillations, superconductivity, quantum phase transitions, and the Kondo effect.…”

Regulation strategies based on quantum interference in electrical transport of single-molecule devices

“…输运性能的测量技术可以主要分为静态结技术和动态结技术 [21] 。 静态结构筑技术 的原理是利用分子的热运动以及分子和电极的相互作用使得分子能够随机桥接 在事先构筑好的固定间距的电机对之间 [22,23] ，主要包括电迁移构筑技术 [24] 、石墨 烯电极静态结技术 [25] 以及扫描显微镜静态捕捉技术 [26] 等。 动态结技术则是基于分…”

NDR and spin-polarized transport properties of magnetic Fe sandwiched C60-GNR single molecule devices: theoretical insight

“…[18][19][20][21][22][23][24][25] Research studies related to composites of graphene and fullerenes have also been hot topics, and they have been well applied in superconductivity, molecular devices, sensors, energy storage and many other fields. [26][27][28][29][30][31][32][33][34][35][36][37][38] For example, Lau et al successfully synthesized a C 60 -GNR single-molecular transistor, where functionalized C 60 was connected to graphene nanoelectrodes through p-p interactions. They found that such a device could exhibit redox-dependent Franck-Condon blockade and avalanche transport phenomenon.…”