Open Access0.7 structure of conductance quantization in quantum point contact
Author(s) -
Jiao Hui-Cong,
Xin An,
Jianjun Liu
Publication year - 2013
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.62.017301
Subject(s) - quantum point contact , physics , condensed matter physics , quantization (signal processing) , conductance , saddle point , quantum wire , quantum , quantum mechanics , statistical physics , quantum well , computer science , mathematics , laser , geometry , computer vision
In the paper, we study electronic transport property through a quantum point contact with the saddle-point potential. Our numerical approach is based on the Green's function technique which is evaluated at the Hartree-Fork level. We reproduce relevant features of 0.7 structure when the strength of electron-electron interaction has changed. Besides, we calculate spin accumulation and noise factor at zero temperature. We deepen the understanding of the effect of strong correlation interaction on spin transport in nanometer semiconductor device.