Abstract/Details

Application of the Keldysh formalism to quantum device modeling and analysis


1992 1992

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Abstract (summary)

The effect of inelastic scattering on quantum electron transport through layered semi-conductor structures is studied numerically using the approach based on the non-equilibrium Green's function formalism of Keldysh, Kadanoff, and Baym. The Markov assumption is not made, and the energy coordinate is retained. The electron-phonon interaction is treated in the self-consistent first Born approximation (SCFBA). The Pauli-exclusion principle is taken into account exactly within the SCFBA. The retention of the energy coordinate allows the calculation of a number of quantities which give insight into the effect of inelastic scattering on electron transport: the effect of inelastic scattering on the occupation of the energy levels, the density of states, the energy distribution of the current density, and the power density is calculated from a quantum kinetic equation for actual device structures under high bias. The approach is used to study the effect of emitter quasi-bound states on the I-V characteristic of resonant tunneling diodes (RTD's), the effect of barrier asymmetry on the phonon-peak in RTD's, and energy balance and heat exchange in mescopic systems.

Indexing (details)


Subject
Electrical engineering
Classification
0544: Electrical engineering
Identifier / keyword
Applied sciences; resonant tunneling diode; semiconductor
Title
Application of the Keldysh formalism to quantum device modeling and analysis
Author
Lake, Roger Kevin
Number of pages
108
Publication year
1992
Degree date
1992
School code
0183
Source
DAI-B 53/09, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
Advisor
Datta, Supriyo
University/institution
Purdue University
University location
United States -- Indiana
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
9301332
ProQuest document ID
303988251
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/303988251
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