drumm-electronicproperties-2012.pdf (767.04 kB)
Electronic properties of multiple adjacent δ-doped Si:P layers: the approach to monolayer confinement
journal contribution
posted on 2012-10-16, 00:00 authored by A Budi, Daniel DrummDaniel Drumm, M C Per, A Tregonning, S P Russo, L C L HollenbergRecent breakthroughs in single-atom fabrication in silicon have brought the exciting prospect of monolayer-based nanoelectronics and theoretical understanding of such systems into sharp focus. Of particular interest is the effect of such sharp two-dimensional Coulomb array confinement on electronic properties of these donor-based semiconducting systems such as valley splitting, which is critical to quantum electronic applications. In this paper we apply ab initio techniques to these high-density donor systems specifically in order to investigate the approach to monolayer confinement. An optimized basis set is developed for Si:P and validated against our previous work on single δ-doped layers. A systematic study is then conducted wherein the effect of multiple adjacent phosphorus δ layers on the electronic properties of the material is explored. We find nonmonotonic electronic behavior as we approach the monolayer confinement limit, with potentially far-reaching implications for large-scale fabrication techniques. © 2012 American Physical Society.
History
Journal
Physical Review B - condensed matter and materials physicsVolume
86Issue
16Article number
165123Pagination
1 - 6Publisher
American Physical SocietyLocation
College Park, Md.Publisher DOI
ISSN
1098-0121eISSN
1550-235XLanguage
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2012, American Physical SocietyUsage metrics
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