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

• 作 者: REN Hua LIANG Wei ZHAO Peng LIU De-Sheng
• 机 构: School of Physics and Technology, University of Jinan, Jinan 250022“,”School of Physics, Shandong Un
• 出 处: 中国物理快报（英文版）
• 发表日期: 2012年7期

Based on nonequilibrium Greens 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.