TY - JOUR
T1 - A nonself-consistent method for the nonequilibrium green's function technique
AU - Sun, Z. Z.
AU - Fan, W.
AU - Zhang, R. Q.
PY - 2009/6
Y1 - 2009/6
N2 - A parametric approximation approach is proposed to study the electronic transport properties in quantum transport systems such as quantum dots and molecules. This approach is developed from the nonequilibrium Green function technique and employs an approximate nonself-consistent (NSC) procedure to substitute the original self-consistent (SC) one when the many-body term, such as electronelectron interaction, is considered. A simple model of one eigen-energy level coupled to two continuous energy spectrums is used to illustrate the new NSC method that can be generalized to multi-energy level cases in a straightforward manner. The comparison between the NSC results with the SC results demonstrate the correctness and the effectiveness of the new method. © 2009 World Scientific Publishing Company.
AB - A parametric approximation approach is proposed to study the electronic transport properties in quantum transport systems such as quantum dots and molecules. This approach is developed from the nonequilibrium Green function technique and employs an approximate nonself-consistent (NSC) procedure to substitute the original self-consistent (SC) one when the many-body term, such as electronelectron interaction, is considered. A simple model of one eigen-energy level coupled to two continuous energy spectrums is used to illustrate the new NSC method that can be generalized to multi-energy level cases in a straightforward manner. The comparison between the NSC results with the SC results demonstrate the correctness and the effectiveness of the new method. © 2009 World Scientific Publishing Company.
KW - Electronic transport
KW - Nonequilibrium green's function
KW - Quantum dots and molecules
UR - http://www.scopus.com/inward/record.url?scp=68049118698&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-68049118698&origin=recordpage
U2 - 10.1142/S0219633609004678
DO - 10.1142/S0219633609004678
M3 - RGC 21 - Publication in refereed journal
SN - 0219-6336
VL - 8
SP - 423
EP - 431
JO - Journal of Theoretical and Computational Chemistry
JF - Journal of Theoretical and Computational Chemistry
IS - 3
ER -