电极
材料科学
星团(航天器)
电子
电子传输链
联轴节(管道)
平面的
耦合强度
电压
方向(向量空间)
化学物理
金团
密度泛函理论
原子物理学
分子物理学
凝聚态物理
化学
物理
计算化学
复合材料
生物化学
计算机图形学(图像)
几何学
数学
物理化学
量子力学
计算机科学
程序设计语言
标识
DOI:10.1142/s0217984924500027
摘要
The transport properties of gold clusters with eight and nine atoms between gold electrodes are investigated by using non-equilibrium Green’s function method combined with density functional theory. Negative differential resistance effect is found both in Au 8 and Au 9 . From a new respect, the mechanism for the negative differential resistance effect is explored through calculating the number of electrons of the atoms in the clusters at different bias voltages. When Au 9 takes vertical orientation, it is found that the voltage can change the coupling strength of the sandwiched system. When the value of the voltage is small, the current increases with decreasing of the cluster-electrode separation. But when the voltage increases to a certain value, the current decreases with decreasing of the cluster-electrode separation. When Au 9 takes parallel orientation, different from other electronic transport systems, it is found that the transport behaviors for Au 9 are not sensitive to the cluster-electrode separation, showing that this configuration has a better transport stability over the changes in distance, which may provide some new clues for developing future electron device.
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