Negative Differential Resistance and Rectifying Effects of Diblock Co-Oligomer Molecule Devices Sandwiched between C_2N-h2D Electrodes

作     者：Meng Ye Cai-Juan Xia Bo-Qun Zhang Yue Ma 叶萌;夏蔡娟;张博群;马越

作者机构：School of Science Xi'an Polytechnic University 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2019年第36卷第4期

页      面：75-78页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：the National Natural Science Foundation of China under Grant No 11004156 the Science and Technology Star Project of Shaanxi Province under Grant No 2016KJX-45 the Graduate Innovation Foundation of Xi’an Polytechnic University under Grant No chx201880 

主　　题：nonequilibrium system memory 

摘      要：Based on nonequilibrium Green s function method in combination with density functional theory, we study the electronic transport properties of dipyrimidinyl-diphenyl molecules embedded in a carbon atomic chain sandwiched between zigzag graphene nanoribbon and different edge geometries C_2N-h2D electrodes. Compared with the graphene electrodes, the C_2N-h2D electrode can cause rectifying and negative differential resistance *** C_2N-h2D with zigzag edges, a more remarkable negative differential resistance phenomenon appears, whereas armchair-edged C_2N-h2D can give rise to much better rectifying behavior. These results suggest that this system can be potentially useful for designs of logic and memory devices.