ABSTRACT
In this paper, we investigated the average energy, specific heat, entropy and magnetic susceptibility of the cylindrical DMS quantum dot with respect to a change in magnetic
field. The corresponding Schrodinger equation of a quantum dot was solved within the effective mass approximation. The resulting energy spectrum was used to find the
corresponding expression for the average energy, specific heat, entropy and magnetic susceptibility. Then, the graphs of the average energy, specific heat, entropy and
magnetic susceptibility as a function of the magnetic field were constructed. According to the results obtained, the average energy decreases nonlinearly with increasing
magnetic field. And the magnetic susceptibility at small values of the magnetic field has a maximum that decreases and tends to zero with increasing magnetic field. With
the increase of magnetic field, specific heat and entropy increase non-linearly.
Keywords: Diluted magnetic semiconductor, quantum dot, thermodynamic properties.
DOI:10.70784/azip.1.2024462
Received: 05.12.2024
Internet publishing: 17.12.2024
AUTHORS & AFFILIATIONS
1. Suleyman Demirel University, Physics. Department, Isparta, Turkey
2. Azerbaijani-French University, 183 Nizami street, Baku, Azerbaijan
3. Institute of Physics, Ministry of Science and Education, Baku, Azerbaijan
4. Isparta University of Applied Sciences, 32260 Isparta, Turkey
5. Institute of Engineering – Technical and Transport Communications of Turkmenistan, 74400, Ashgabat, Turkmenistan
6. Institute of Natural Sciences, Suleyman Demirel University, 32260 Isparta, Turkey
E-mail: ✉Corresponding Arif Babanlı arifbabanli@sdu.edu.tr.
Graphics and Images
Fig.1-2-3-4
|
[1] B. Çakır, Y. Yakar, A. Özmen, M.Ö. Sezer, ve M. Şahin. “Linear and nonlinear optical absorption coefficients and binding energy of a spherical quantum dot”, Superlattices Microstruct., c. 47, sy 4, ss. 556-566, 2010.
[2] J.D. Castano-Yepes, D.A. Amor-Quiroz, C.F. Ramirez-Gutierrez, ve E.A. Gomez. “Impact of a topological defect and Rashba spin-orbit interaction on the thermo-magnetic and optical properties of a 2D semiconductor quantum dot with Gaussian confinement”, Phys. E Low-Dimens. Syst. Nanostructures, c. 109, ss. 59-66.
[3] J.K. Furdyna. “Diluted magnetic semiconductors”, J. Appl. Phys., c. 64, sy 4, ss. R29-R64, Ağu. 1988, doi: 10.1063/1.341700.
[4] A.M. Babanlı, M. Balcı, ve V. Sabyrov. “Optical properties of an ellipsoidal quantum dot with a diluted magnetic semiconductor structure”, J. Magn. Magn. Mater., c. 586, s. 171146, 2023.
[5] R.L. Harper vd., “Excited confined quantum states in CdMnTe-CdTe superlattices”, J. Appl. Phys., c. 65, sy 2, ss. 624-628, Oca. 1989, doi: 10.1063/1.343094.
[6] A.A. Sirenko vd., “Electron and hole g factors measured by spin-flip Raman scattering in CdTe/Cd1−xMgxTe single quantum wells”, Phys. Rev. B, c. 56, sy 4, ss. 2114-2119, Tem. 1997, doi: 10.1103/PhysRevB.56.2114.
|