物理化学学报2010，Vol.26Issue(10)：2686-2690,5.
隧道结电场辅助下叔丁胺分子在Cu(111)表面跳跃
Electric Field Assisted Hopping of Tert-Butylamine on Cu(111)Surface
摘要
Abstract
The lateral hopping of tert-butylamine (t-BA) molecules on a Cu(lll) surface was studied by scanning tunneling microscopy (STM) at 78K.The hopping probabilities of the molecules in the tunneling junction were found to depend linearly on the applied tunneling current,indicating a single electron-induced process.Hopping probabilities under an electric field of opposite polarity was found to be different.This non-equivalence is attributed to an electric field assisted diffusion where the adsorption energy and the diffusion barrier of the t-BA molecule are different when the polar molecule is subjected to opposite electric fields.关键词
扫描隧道显微镜/单分子/跳跃现象/电子激发/隧道结电场Key words
Scanning tunneling microscope/Single molecule/Hopping phenomenon/Electronic excitation/Electric field in a tunneling junction分类
化学化工引用本文复制引用
许逾群,仉君,袁秉凯,邓珂,杨蓉,裘晓辉..隧道结电场辅助下叔丁胺分子在Cu(111)表面跳跃[J].物理化学学报,2010,26(10):2686-2690,5.基金项目
国家重点基础研究发展计划项目(973)(2006CB921502)和中国科学院知识创新工程项(KJCX2-YW-M04)资助 （973）
