Strain and dipole effects in covalent-polar semiconductor superlattices
buir.contributor.author | Çıracı, Salim | |
buir.contributor.author | Özbay, Ekmel | |
buir.contributor.author | Özbay, Ekmel | |
buir.contributor.orcid | Çıracı, Salim|0000-0001-8023-9860 | |
buir.contributor.orcid | Özbay, Ekmel|0000-0003-2953-1828 | |
dc.citation.epage | 5555 | en_US |
dc.citation.issueNumber | 11 | en_US |
dc.citation.spage | 5550 | en_US |
dc.citation.volumeNumber | 44 | en_US |
dc.contributor.author | Batra, I. P. | en_US |
dc.contributor.author | Çıracı, Salim | en_US |
dc.contributor.author | Özbay, Ekmel | en_US |
dc.date.accessioned | 2016-02-08T10:56:16Z | |
dc.date.available | 2016-02-08T10:56:16Z | |
dc.date.issued | 1991 | en_US |
dc.department | Department of Physics | en_US |
dc.description.abstract | The energetics and electronic structure of lattice-matched (Ge)4/(GaAs)2 and strained, pseudomorphic (Si)4/(GaAs)2 (001) semiconductor superlattices have been studied with use of a self-consistent-field pseudopotential method. The interfaces are assumed to be uniform, but the interlayer distances of the pseudomorphic lattice are optimized to achieve a minimum-total-energy configuration. The calculated enthalpy of formation is in the 100-meV/atom range for these two superlattices, which is almost an order of magnitude larger than the strain component in (Si)4/(GaAs)2. The superlattice dipole induces a metal-insulator transition by periodically tilting the potential. The electrostatic energy derived from this dipole field is the main cause of the instability relative to disproportionation. © 1991 The American Physical Society. | en_US |
dc.identifier.doi | 10.1103/PhysRevB.44.5550 | en_US |
dc.identifier.issn | 1631829 | |
dc.identifier.uri | http://hdl.handle.net/11693/26192 | |
dc.language.iso | English | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1103/PhysRevB.44.5550 | en_US |
dc.source.title | Physical Review B | en_US |
dc.title | Strain and dipole effects in covalent-polar semiconductor superlattices | en_US |
dc.type | Article | en_US |
relation.isAuthorOfPublication | 8c1d6866-696d-46a3-a77d-5da690629296 |
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