| dc.creator | Duque Echeverri, Carlos Alberto | |
| dc.creator | Kasapoglu, Esin | |
| dc.creator | Behiye Yücel, Melike | |
| dc.creator | Sakiroglu, Serpil | |
| dc.creator | Sari, Huseyin | |
| dc.date | 2023-01-31T21:42:58Z | |
| dc.date | 2023-01-31T21:42:58Z | |
| dc.date | 2022 | |
| dc.date.accessioned | 2024-04-23T14:19:23Z | |
| dc.date.available | 2024-04-23T14:19:23Z | |
| dc.identifier | Kasapoglu, E.; Yücel, M.B.; Sakiroglu, S.; Sari, H.; Duque, C.A. Optical Properties of Cylindrical Quantum Dots with Hyperbolic-Type Axial Potential under Applied Electric Field. Nanomaterials 2022, 12, 3367. https://doi.org/10.3390/ nano12193367 | |
| dc.identifier | https://hdl.handle.net/10495/33323 | |
| dc.identifier | 10.3390/ nano12193367 | |
| dc.identifier | 2079-4992 | |
| dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/9229507 | |
| dc.description | ABSTRACT: In this paper, we have researched the electronic and optical properties of cylindrical
quantum dot structures by selecting four different hyperbolic-type potentials in the axial direction
under an axially-applied electric field. We have considered a position-dependent effective mass
model in which both the smooth variation of the effective mass in the axial direction adjusted to
the way the confining potentials change and its abrupt change in the radial direction have been
considered in solving the eigenvalue differential equation. The calculations of the eigenvalue equation
have been implemented considering both the Dirichlet conditions (zero flux) and the open boundary
conditions (non-zero flux) in the planes perpendicular to the direction of the applied electric field,
which guarantees the validity of the results presented in this study for quasi-steady states with
extremely high lifetimes. We have used the diagonalization method combined with the finite element
method to find the eigenvalues and eigenfunction of the confined electron in the cylindrical quantum
dots. The numerical strategies that have been used for the solution of the differential equations
allowed us to overcome the multiple problems that the boundary conditions present in the region
of intersection of the flat and cylindrical faces that form the boundary of the heterostructure. To
calculate the linear and third-order nonlinear optical absorption coefficients and relative changes
in the refractive index, a two-level approach in the density matrix expansion is used. Our results
show that the electronic and, therefore, optical properties of the structures focused on can be adjusted
to obtain a suitable response for specific studies or goals by changing structural parameters such as
the widths and depths of the potentials in the axial direction, as well as the electric field intensity. | |
| dc.description | COL0033319 | |
| dc.format | 16 | |
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.language | eng | |
| dc.publisher | MDPI | |
| dc.publisher | Grupo de Materia Condensada-UdeA | |
| dc.publisher | Basilea, Suiza | |
| dc.relation | Nanomaterials | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.rights | http://creativecommons.org/licenses/by/2.5/co/ | |
| dc.rights | http://purl.org/coar/access_right/c_abf2 | |
| dc.rights | https://creativecommons.org/licenses/by/4.0/ | |
| dc.subject | Absorción de la luz | |
| dc.subject | Absorption of light | |
| dc.subject | Cylindrical quantum dot | |
| dc.subject | Hyperbolic potentials | |
| dc.title | Optical Properties of Cylindrical Quantum Dots with Hyperbolic-Type Axial Potential under Applied Electric Field | |
| dc.type | info:eu-repo/semantics/article | |
| dc.type | info:eu-repo/semantics/publishedVersion | |
| dc.type | http://purl.org/coar/resource_type/c_2df8fbb1 | |
| dc.type | https://purl.org/redcol/resource_type/ART | |
| dc.type | Artículo de investigación | |
