Electron Transport Properties of Two-Dimensional Monolayer Films from Au-P-Au to Au-Si-Au Molecular Junctions

• 来源期刊: 中国物理快报（英文版）
• 关键词: @@
• 年，卷（期）: 2018,（1）
• 页码范围: 76-80
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/0256-307X/35/1/017201

摘要

We investigate the electronic-transport properties of two-dimensional monolayer films from Au-P-Au molecular junction to Au-Si-Au molecular junction using elastic scattering Green's function theory.In the process of replacing the P atoms with Si atoms every other line from the middle of monolayer blue phosphorus molecular structure,the substitution of Si atoms changes the properties of Au-P-Au molecular junction significantly.Interestingly,the current value has a symmetric change as a parabolic curve with the peak appearing in Au-Si1 P1-Au molecular junction,which provides the most stable current of 15.00nA in a wide voltage range of 0.70-2.70 V.Moreover,the current-voltage characteristics of the structures indicate that the steps tend to disappear revealing the property similar to metal when the Si atoms dominate the molecular junction.