Open AccessCalculation of conductance of quantum point contact in STM
Author(s) -
Qianguang Li,
Haixia Xu,
Yi Li,
Zhiyang Li
Publication year - 2005
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.54.5251
Subject(s) - quantum point contact , scanning tunneling microscope , conductance , condensed matter physics , materials science , quantum tunnelling , scattering , quantum , quantum wire , radius , physics , quantum well , optics , quantum mechanics , laser , computer security , computer science
The conductance of quantum point contact in scanning tunneling microscope is calculated by modal matching and scattering matrix method. The results show that the conductance of the nano-structure formed during quantum point contact in STM is quantized, which becomes more obvious as the radius and cone angle of the nano-structure decreases. The quantitative behavior could be observed more easily with semiconductors than with metals.