Non-Equilibrium Green's Function (NEGF): A Different Perspective

By Supriyo Datta

Electrical and Computer Engineering, Purdue University, West Lafayette, IN

Published on


The NEGF method was established in the 1960’s through the classic work of Keldysh and others [1] using the methods of many- body perturbation theory (MBPT) and this approach is widely used in the literature [2]. By contrast I have introduced a different approach starting with the one-electron Schrödinger equation [3, 4] which is used by many in the nanoelectronics community. In this talk I will try to answer the questions I often get regarding the relation between the two approaches and I thank the organizers of the IWCE for giving me this opportunity.

Publication preprint is available.

Sponsored by


[1] (a) L.V.Keldysh (1965) Diagram Technique for non-equilibrium processes. Sov.Phys. JETP 20, 1018; (b) L.P.Kadanoff, G.Baym (1962) Quantum Statistical Mechanics, Frontiers in Physics Lecture Notes, Benjamin/Cummings.
[2] See for example, G.Stefanuci, R.van Leewuen, Non-Equilibrium Many-Body Theory of Quantum Systems, Cambridge (2013) and references therein.
[3] (a) S.Datta, Electron Transport in Mesoscopic Systems, Chapter 8, Cambridge (1995); (b) Quantum Transport, Atom to Transistor, Chapter 8-10, Cambridge (2005).
[4] S.Datta, Lessons from Nanoelectronics, World Scientific (2012). II Edition planned for 2016.

Cite this work

Researchers should cite this work as follows:

  • S. Datta, "Non-Equilibrium Green's Function (NEGF) Method: A Different Perspective," in Computational Electronics (IWCE) 2015 International Workshop on, DOI: 10.1109/IWCE.2015.7301951

  • Supriyo Datta (2015), "Non-Equilibrium Green's Function (NEGF): A Different Perspective,"

    BibTex | EndNote



North Ballroom, PMU, Purdue University, West Lafayette, IN