Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.11851/8629
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Ogurtani, Tarik Omer | - |
dc.contributor.author | Celik, Aytac | - |
dc.contributor.author | Ören, Ersin Emre | - |
dc.date.accessioned | 2022-07-30T16:43:38Z | - |
dc.date.available | 2022-07-30T16:43:38Z | - |
dc.date.issued | 2022 | - |
dc.identifier.citation | Ogurtani, T. O., Celik, A., & Oren, E. E. (2022). Effects of anisotropic surface drift diffusion on the strained heteroepitaxial nanoislands subjected to electromigration stressing. Journal of Applied Physics, 131(7), 075301. | en_US |
dc.identifier.issn | 0021-8979 | - |
dc.identifier.issn | 1089-7550 | - |
dc.identifier.uri | https://doi.org/10.1063/5.0067760 | - |
dc.identifier.uri | https://hdl.handle.net/20.500.11851/8629 | - |
dc.description.abstract | A systematic study based on self-consistent dynamical simulations is presented for the morphological evolutionary behavior of an isolated thin Ge/Si nanoisland (quantum dot) on a rigid substrate exposed to electromigration forces. This morphological evolution is basically induced by the anisotropic surface drift diffusion, driven by the capillary forces, the lattice mismatch stresses, and the wetting potential. In this study, we have mainly focused on the size and shape development kinetics of quantum dots, known as the Stranski-Krastanov (SK) morphology, influenced by applied electromigration stresses. Emphasis is given to the effects of rotational symmetry associated with the anisotropic diffusivity in 2D space (i.e., quantum wires in 3D). The pointed bullet-shaped Stranski-Krastanov islands with high aspect ratios, xi = 0.77, are formed at the cathode edge, while the whole nanoisland slightly creeps out of the initial computational domain. The favorable configuration of the Ge-20/Si-80 alloy test module, which resulted in zeta = 0.37 enhancement in the contour surface area, has a dome shape attached to the [010] top surface of the Si substrate with a zone axis of {010}/< 001 >. The anisotropic surface diffusion dyadic has a fourfold rotational symmetry axis [001] lying on the (001) plane of the Si substrate, and its major axis is tilted at about phi = 45 degrees from the applied electrostatic field extended along the longitudinal axis [100] of the substrate. This particular experiment resulted in a SK singlet peak with a small satellite with a very small aspect ratio of approximately equal to 0.2 that may be appropriate for the conception of quantum optoelectronic devices or inter-band structures to generate photoelectrons having large energy spectra, thereby increasing the efficiency of photovoltaics exposed to solar radiations. | en_US |
dc.description.sponsorship | Department of Metallurgy and Materials Engineering, at the Middle East Technical University; Turkish Scientific and Technological Research Council, TUBITAK [107M011, 111T343, 315M222] | en_US |
dc.description.sponsorship | ACKNOWLEDGMENTSThe authors thank Dr. Oncu Akyildiz of Hitit University for valuable assistance with the computer coding that has been used extensively in the simulation studies presented in this paper. This study was partially supported by the Department of Metallurgy and Materials Engineering, at the Middle East Technical University, and the Turkish Scientific and Technological Research Council, TUBITAK, through research Grant Nos. 107M011, 111T343, and 315M222. | en_US |
dc.language.iso | en | en_US |
dc.publisher | AIP Publishing | en_US |
dc.relation.ispartof | Journal of Applied Physics | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Single-Crystal Films | en_US |
dc.subject | Thin-Film | en_US |
dc.subject | Morphological Instability | en_US |
dc.subject | Irreversible-Processes | en_US |
dc.subject | Reciprocal Relations | en_US |
dc.subject | Evolution | en_US |
dc.subject | Capillary | en_US |
dc.subject | Islands | en_US |
dc.subject | Driven | en_US |
dc.subject | Ge | en_US |
dc.title | Effects of Anisotropic Surface Drift Diffusion on the Strained Heteroepitaxial Nanoislands Subjected To Electromigration Stressing | en_US |
dc.type | Article | en_US |
dc.department | Fakülteler, Mühendislik Fakültesi, Biyomedikal Mühendisliği Bölümü | en_US |
dc.department | Faculties, Faculty of Engineering, Department of Biomedical Engineering | en_US |
dc.identifier.volume | 131 | en_US |
dc.identifier.issue | 7 | en_US |
dc.authorid | Oren, Ersin Emre/0000-0001-5902-083X | - |
dc.authorid | Çelik, Aytaç/0000-0002-7867-9506 | - |
dc.authorid | Ogurtani, Tarik/0000-0001-6519-940X | - |
dc.identifier.wos | WOS:000760759700006 | en_US |
dc.identifier.scopus | 2-s2.0-85125081640 | en_US |
dc.institutionauthor | Ören, Ersin Emre | - |
dc.identifier.doi | 10.1063/5.0067760 | - |
dc.authorwosid | Oren, Ersin Emre/AGQ-5958-2022 | - |
dc.authorwosid | Çelik, Aytaç/F-5529-2012 | - |
dc.authorscopusid | 6701329251 | - |
dc.authorscopusid | 14420692100 | - |
dc.authorscopusid | 35846321000 | - |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.identifier.scopusquality | Q2 | - |
item.openairetype | Article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
crisitem.author.dept | 02.2. Department of Biomedical Engineering | - |
Appears in Collections: | Biyomedikal Mühendisliği Bölümü / Department of Biomedical Engineering Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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