Low Bias Negative Differential Resistance with Large Peak-to-Valley Ratio in a BDC60 Junction

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2012,（7）
• 页码范围: 218-220
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/29/7/077301

摘要

Based on nonequilibrium Green's function method and density functional theory calculations,we investigate theoretically the electronic transport properties of 1,4-bis(fullero[c]pyrrolidinl-yl)benzene (BDC60).A low bias negative differential resistance with the peak-to-valley ratio as high as 305.41 is obtained.The observed negative differential resistance is explained in terms of the evolution of the transmission spectra,molecular projected self-consistent Hamiltonian states and molecular projected energy levels with applied bias.