dc.contributor.author | Duque, C. A. | |
dc.contributor.author | Kasapoglu, E. | |
dc.contributor.author | Sakiroglu, S. | |
dc.contributor.author | Sari, H. | |
dc.contributor.author | Sokmen, I. | |
dc.date.accessioned | 2019-07-27T12:10:23Z | |
dc.date.accessioned | 2019-07-28T10:07:11Z | |
dc.date.available | 2019-07-27T12:10:23Z | |
dc.date.available | 2019-07-28T10:07:11Z | |
dc.date.issued | 2010 | |
dc.identifier.issn | 0169-4332 | |
dc.identifier.issn | 1873-5584 | |
dc.identifier.uri | https://dx.doi.org/10.1016/j.apsusc.2010.05.081 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12418/9773 | |
dc.description | WOS: 000280235800010 | en_US |
dc.description.abstract | Using the effective mass and parabolic band approximations and a variational procedure we have calculated the combined effects of intense laser radiation, hydrostatic pressure, and applied electric field on shallow-donor impurity confined in cylindrical-shaped single and double GaAs-Ga1-xAlxAs QD. Several impurity positions and inputs of the heterostructure dimensions, hydrostatic pressure, and applied electric field have been considered. The laser effects have been introduced by a perturbative scheme in which the Coulomb and the barrier potentials are modified to obtain dressed potentials. Our findings suggest that (1) for on-center impurities in single QD the binding energy is a decreasing function of the dressing parameter and for small dot dimensions of the structures (lengths and radius) the binding energy is more sensitive to the dressing parameter, (2) the binding energy is an increasing/decreasing function of the hydrostatic pressure/applied electric field, (3) the effects of the intense laser field and applied electric field on the binding energy are dominant over the hydrostatic pressure effects, (4) in vertically coupled QD the binding energy for donor impurity located in the barrier region is smaller than for impurities in the well regions and can be strongly modified by the laser radiation, and finally (5) in asymmetrical double QD heterostructures the binding energy as a function of the impurity positions follows a similar behavior to the observed for the amplitude of probability of the noncorrelated electron wave function. (C) 2010 Elsevier B.V. All rights reserved. | en_US |
dc.description.sponsorship | COLCIENCIAS; CODI-Universidad de Antioquia (Estrategia de Sostenibilidad Grupo de Materia Condensada-UdeA); Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia; Excellence Center for Novel Materials/COLCIENCIAS [043-2005] | en_US |
dc.description.sponsorship | This research was partially supported by Colombian Agencies: COLCIENCIAS, CODI-Universidad de Antioquia (Estrategia de Sostenibilidad Grupo de Materia Condensada-UdeA, 2009-2010), Facultad de Ciencias Exactas y Naturales-Universidad de Antioquia (CAD-exclusive dedication project 2009-2010), and the Excellence Center for Novel Materials/COLCIENCIAS (Contract No. 043-2005). CAD is grateful to Dr. Anna Kurczynska for useful discussions and the critical reading of the manuscript. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | ELSEVIER SCIENCE BV | en_US |
dc.relation.isversionof | 10.1016/j.apsusc.2010.05.081 | en_US |
dc.rights | info:eu-repo/semantics/closedAccess | en_US |
dc.subject | Intense laser effects | en_US |
dc.subject | Quantum wells | en_US |
dc.subject | Hydrostatic pressure | en_US |
dc.subject | Electric field | en_US |
dc.subject | Impurity | en_US |
dc.title | Intense laser effects on donor impurity in a cylindrical single and vertically coupled quantum dots under combined effects of hydrostatic pressure and applied electric field | en_US |
dc.type | article | en_US |
dc.relation.journal | APPLIED SURFACE SCIENCE | en_US |
dc.contributor.department | [Duque, C. A.] Univ Antioquia, Inst Fis, Medellin 1226, Colombia -- [Kasapoglu, E. -- Sari, H.] Cumhuriyet Univ, Dept Phys, TR-58140 Sivas, Turkey -- [Sakiroglu, S. -- Sokmen, I.] Dokuz Eylul Univ, Dept Phys, TR-35160 Izmir, Turkey -- [Sakiroglu, S.] Univ Jyvaskyla, Dept Phys, NanoSci Ctr, FI-40014 Jyvaskyla, Finland | en_US |
dc.identifier.volume | 256 | en_US |
dc.identifier.issue | 24 | en_US |
dc.identifier.endpage | 7413 | en_US |
dc.identifier.startpage | 7406 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |