上海大学学报(英文版)
上海大學學報(英文版)
상해대학학보(영문판)
JOURNAL OF SHANGHAL UNIVERSITY
2003年
4期
361-365
,共5页
宋小龙%赵志云%汪源%施耀铭
宋小龍%趙誌雲%汪源%施耀銘
송소룡%조지운%왕원%시요명
resonant transmission%quantum wire%evanescent mode
We study electron transmission through two impurities in a narrow quantum wire by solving Dyson's equations for singleelectron Green functions. We have verified that, for the delta-function potential of two impurities, the Green function can be factor-sion amplitude obey Fisher-Lee's relation. An analytical expression of the electron transmission amplitude for intrasubband and inter-subband is obtained as a function of Fermi energy and the distance between two impurities. The resonant behavior of the currenttransmission amplitude are detail discussed.
