Transport characteristics of SiGe nanowires
| Transport characteristics of SiGe nanowires |
Neerav Kharche, Mathieu Luisier, Timothy Boykin, Gerhard Klimeck |
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Objective:
- Study electron transport in SiGe alloy nanowires using two approaches
- Supercell electronic structure
- NEGF
- Provide better understanding of transport characteristics by correlating the characteristics from both formalisms
Approach:
- Strain relaxation: VFF-Keating model
- Bandstructure: Unfold supercell eigen-spectrum
- Transmission and DOS: NEGF
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Impact:
- Transmission turn-ons can be accurately predicted from unfolded supercell bands
- Transmission peaks arise from localized DOS
- Traditional VCA approximation is unable to model these effects
- Publication in [J93]
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