Electric field, magnetic field, and hydrostatic pressure effects on the absorption coefficient for GaAs/AlxGa1-xAs/Al0.3Ga0.7As staggered core-shell-shell spherical quantum dots

被引：2

作者：

Rodriguez-Guijarro, G. ^{[1
]}

Rodriguez-Magdaleno, K. A. ^{[2
]}

Kasapoglu, E. ^{[3
]}

Nava-Maldonado, F. M. ^{[2
]}

Ungan, F. ^{[3
]}

Martinez-Orozco, J. C. ^{[1
]}

机构：

[1] Univ Autonoma Zacatecas, Unidad Acad Fis, Calzada Solidar Esquina Con Paseo La Bufa S-N, Zacatecas 98060, Zac, Mexico

[2] Univ Autonoma Zacatecas, Un Acad Ciencias Quim, Campus Univ UAZ Siglo XXl Carretera Zacatecas-Gua, Zacatecas 98160, Zac, Mexico

[3] Sivas Cumhuriyet Univ, Fac Sci, Dept Phys, TR-58140 Sivas, Turkiye

来源：

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | 2023年 / 154卷

关键词：

Spherical quantum dot; Absorption coefficient; Intraband transitions; Terahertz; ENERGIES;

D O I：

10.1016/j.physe.2023.115809

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Quantum dot's optical properties are of great interest from the point of view of basic physics, as well as for their possible applications in optoelectronic devices. Among the large number of possible quantum dot materials, we are interested in GaAs/AlxGa1-xAs/Al0.3Ga0.7As staggered spherical core-shell-shell quantum dots. Here, we theoretically report, working within the effective mass approximation, on the effect of externally applied magnetic and electric fields, as well as hydrostatic pressure on the system. The main findings are that the magnetic field and the hydrostatic pressure slightly change the studied properties, while the electric field significantly modify both the peak position and the magnitude of the absorption coefficient, leading to an optical response for intraband transitions in the terahertz range of the electromagnetic spectrum.

引用

页数：5

共 4 条

[1] Effect of the hydrostatic pressure and shell's Al composition in the intraband absorption coefficient for core/shell spherical GaAs/AlxGa1-xAs quantum dots
Rodriguez-Magdaleno, K. A.
Mora-Ramos, M. E.
Perez-Alvarez, R.
Martinez-Orozco, J. C.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2020, 108
[2] Intra-miniband absorption coefficient in GaAs/AlxGa1-xAs core/shell spherical quantum
Rodriguez-Magdaleno, K. A.
Perez-Alvarez, R.
Martinez-Orozco, J. C.
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 736 : 211 - 215
[3] A detailed investigation of electronic and intersubband optical properties of AlxGa1-xAs/Al0.3Ga0.7As/AlyGa1-yAs/Al0.3Ga0.7As multi-shell quantum dots
Kavruk, Ahmet Emre
Sahin, Mehmet
Atav, Ulfet
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2014, 47 (29)
[4] Intra and interband optical absorption coefficient for asymmetric double AlGaAs/GaAs quantum well under hydrostatic pressure and electric field effects
Maldonado-Villa, B. E.
Rodriguez-Magdaleno, K. A.
Nava-Maldonado, F. M.
Duque, C. A.
Ungan, F.
Martinez-Orozco, J. C.
PHYSICS LETTERS A, 2024, 523

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