首页> 外文期刊>Nanotechnology >Electronic and transport properties of a molecular junction with asymmetric contacts
【24h】

Electronic and transport properties of a molecular junction with asymmetric contacts

机译:具有不对称接触的分子结的电子和输运性质

获取原文
获取原文并翻译 | 示例
           

摘要

Asymmetric molecular junctions have been shown experimentally to exhibit a dual-conductance transport property with a pulse-like current-voltage characteristic, by Reed and co-workers. Using a recently developed first-principles integrated piecewise thermal equilibrium current calculation method and a gold-benzene-1-olate-4-thiolate-gold model molecular junction, this unusual transport property has been reproduced. Analysis of the electrostatics and the electronic structure reveals that the high-current state results from subtle bias induced charge transfer at the electrode-molecule contacts that raises molecular orbital energies and enhances the current-contributing molecular density of states and the probabilities of resonance tunneling of conduction electrons from one electrode to another.
机译:Reed和同事通过实验证明了不对称分子结具有双脉冲传输特性,具有类似脉冲的电流-电压特性。使用最近开发的第一性原理集成的分段热平衡电流计算方法和金-苯-1-油酸酯-4-硫醇盐-金模型分子结,已经再现了这种异常的传输性质。对静电和电子结构的分析表明,高电流状态是由电极-分子接触处的细微偏压诱导的电荷转移导致的,该电荷转移增加了分子轨道的能量并增强了态的电流贡献分子密度和共振隧穿的概率。将电子从一个电极传导到另一个电极。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号