Journal of Computational Electronics

, Volume 8, Issue 3–4, pp 267–286 | Cite as

Ballistic quantum transport using the contact block reduction (CBR) method

An introduction
  • Stefan Birner
  • Christoph Schindler
  • Peter Greck
  • Matthias Sabathil
  • Peter Vogl
Article

Abstract

The contact block reduction (CBR) method is a variant of the nonequilibrium Green’s function formalism and can be used to describe quantum transport in the ballistic limit very efficiently. We present a numerical implementation of a charge self-consistent version of the CBR algorithm. We show in detail how to calculate the electronic properties of open quantum systems such as the transmission function, the local density of states and the carrier density. Several 1D and 2D examples are provided to illustrate the key points. The CBR method is a very powerful tool to tackle the challenge of calculating transport in the ballistic limit for 3D devices of arbitrary shape and with an arbitrary number of contacts.

Keywords

Ballistic quantum transport Nonequilibrium Green’s function formalism NEGF Transmission function Landauer-Büttiker formalism Device simulation 

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Copyright information

© Springer Science+Business Media LLC 2009

Authors and Affiliations

  • Stefan Birner
    • 1
  • Christoph Schindler
    • 1
  • Peter Greck
    • 1
  • Matthias Sabathil
    • 1
  • Peter Vogl
    • 1
  1. 1.Walter Schottky Institut and Physics DepartmentTechnische Universität MünchenGarchingGermany
  2. 2.OSRAM Opto Semiconductors GmbHRegensburgGermany

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