Thermodynamic and magnetic properties of cylindrical of nanoshell GaAsMn considering Rashba spin-orbit coupling M Kria, M El-Yadri, L M Peréz, A Tiutiunnyk, P Díaz, L Pedraja-Rejas, D Laroze, A B Davlatov, S C Kenfack, M Tshipa, E Feddi Physica Scripta, 2025 Diluted magnetic semiconductors (DMS) continue to attract attention due to the central role of spin in their physical behavior. Among spin-related effects, Rashba spin-orbit interaction (RSO), which arises from structural inversion asymmetry and couples an electron’s spin with its orbital momentum, can significantly affect thermo-magnetic properties and quantum transport. In this work, we investigate the impact of RSO on the thermodynamic and magnetic properties of GaMnAs cylindrical nanoshells by numerically solving the Schrödinger equation and deriving relevant quantities using the Boltzmann-Gibbs statistical framework. Our results reveal that RSO and external magnetic fields have antagonist effects on spin-split energy levels: the magnetic field enhances confinement by shrinking electronic orbitals, whereas RSO tends to delocalize the wavefunction, reducing confinement energy. This competition modulates the system’s thermodynamic and magnetic responses. Specifically, the heat capacity shows a pronounced peak at very low temperatures, consistent with the Schottky anomaly in low-dimensional systems. Furthermore, magnetic susceptibility exhibits strong dependence on both temperature and magnetic field, and a field- and temperature-induced phase transition from ferromagnetic to paramagnetic behavior is observed.
Unraveling the effects of non-parabolicity on electron energy levels in InP/InAs/InP heterostructures A Davlatov, G Gulyamov, A Nabiyev, E Feddi, K Feddi, A Abdukarimov, A Botirjonov Physica Scripta, 2024 In this research, electron energy levels were calculated analytically using Nelson’s formula, the shooting method, and Garrett’s formula for effective mass. These calculations were performed for a rectangular finite deep potential well, focusing on the InP/InAs/InP heterostructure, which is a narrow-bandgap semiconductor system. Our results demonstrate that the nonparabolicity of the dispersion has a more significant effect on higher energy levels compared to lower ones, with deviations of up to 15% for the third energy level. An equation estimating the number of observable energy levels in the potential well is suggested, revealing that considering nonparabolicity leads to a 20% increase in the number of levels compared to the parabolic dispersion case. The relationship between the widths of infinite and finite potential wells for equivalent energy levels follows a linear behaviour, with bonding coefficients ranging from 95,93% to 97,49% and a maximum difference of 1.5% between parabolic and non-parabolic cases. The transcendental equation for the energy levels is linearized, yielding a fourth-order equation that provides results within 98% accuracy compared to the original equation. These findings contribute to the understanding of the energy distribution in InP/InAs/InP heterostructures with a view to their application in optoelectronic devices such as lasers, light-emitting diodes
Entropy of electron gas in semiconductor nanowires G. Gulyamov, A. B. Davlatov, D. R. Urinboev Low Temperature Physics, 2023 The thermodynamic potential and entropy of the electron gas of a semiconductor nanowire are obtained. When calculating the entropy of an electron gas with a nonparabolic energy dispersion, the Nelson method was used. The entropy of the electron gas with the value of the chemical potential of the smaller line, which is equal to or greater than the energy of an arbitrary discrete energy level, is studied. An analytical expression for the entropy is obtained in the case when the chemical potential of the electron gas is equal to the energy of the discrete level. The temperature dependences of the entropy of the electron gas of semiconductor nanowires on the degree of nonparabolicity of the energy dispersion law are found.
Influence of nonparabolicity of the dispersion law and temperature on the energy density of states in semiconductor nanowires Gafur Gulyamov, Abror B. Davlatov, Doston R. Urinboev Aip Conference Proceedings, 2023 Using the thermodynamic density of states, the temperature dependence of the energy density of states in nanowires is investigated. Expressions are derived for the concentration and density of states of a quasi-one-dimensional electron gas. The graphs of the dependence of the concentration and energy density of states for parabolic and nonparabolic dispersion laws on the chemical potential of electrons are presented. The states with parabolic and nonparabolic dispersion laws were compared. The shifts and spread of energy levels are investigated using the thermodynamic density of states. The spreading of energy states was found with increasing temperature. The graphs of the temperature dependence of the energy level of electrons for parabolic and nonparabolic states are presented. Changes in the thermodynamic density of states corresponding to energy levels are depicted as a function of temperature.
Entropy of electron gas in semiconductor nanowires Fizika Nizkikh Temperatur, 2023
Strain effects on the linear and nonlinear optical properties of InP/InAsP/InP quantum well A Davlatov, B Abdulazizov, A Abdukarimov «Узбекский физический журнал» 28 (1) , 2026 2026
Lattice mismatch, pressure and temperature effects on linear and nonlinear optical properties of InAs nanodots embedded in InAsP nanowires A Davlatov, K Feddi, B Abdulazizov, D Urinboev, R Mukhiddinov Journal of Luminescence 286, 121334 , 2025 2025 Citations: 2
Optical properties of a cubic InAs quantum dot embedded in a rectangular-based InAsP nanowire A Davlatov, B Abdulazizov, D Urinboev «Узбекский физический журнал» 27 (3) , 2025 2025
Quantum shape effects and influence of electric fields on energy levels and thermodynamic properties of electron gas in semiconductor nanowires A Davlatov, K Feddi, G Gulyamov, B Abdulazizov Physica B: Condensed Matter, 417721 , 2025 2025 Citations: 1
Thermodynamic and magnetic properties of cylindrical of nanoshell GaAsMn considering Rashba spin–orbit coupling M Kria, M El-Yadri, LM Peréz, A Tiutiunnyk, P Díaz, L Pedraja-Rejas, ... Physica Scripta 100 (8), 085958 , 2025 2025 Citations: 4
Effect of Hydrostatic Pressure and Temperature on Thermodynamic Properties of Electron Gas in Narrow Bandgap Semiconductor Nanowires A Davlatov, G Gulyamov, E Feddi, K Feddi, A Khalmirzaev, S Inoyatov Journal of Low Temperature Physics 218 (3), 166-192 , 2025 2025 Citations: 1
Strain, pressure and temperature effects on linear and nonlinear optical properties of InP/InAs 1−x P x /InP quantum well heterostructures AB Davlatov, AH Hameed, K Feddi, PJ Baymatov, BT Abdulazizov, ... Applied Physics A 131 (1), 1 , 2025 2025 Citations: 6
Energy levels of nanodots inside semiconductor nanowires A Davlatov, G Gulyamov, D Urinboev Brazilian Journal of Physics 54 (4), 125 , 2024 2024 Citations: 2
Unraveling the effects of non-parabolicity on electron energy levels in InP/InAs/InP heterostructures A Davlatov, G Gulyamov, A Nabiyev, E Feddi, K Feddi, A Abdukarimov, ... Physica Scripta 99 (7), 075933 , 2024 2024 Citations: 3
Entropy of electron gas in semiconductor nanowires G Gulyamov, AB Davlatov, DR Urinboev Low Temperature Physics 49 (9), 1066-1071 , 2023 2023 Citations: 3
Thermodynamic properties of electron gas in semiconductor nanowires A Davlatov, G Gulyamov, D Urinboev Journal of Low Temperature Physics 212 (1), 36-53 , 2023 2023 Citations: 5
Омический контакт для n-4H-SiC ХН Жураев, МУ Хажиев, АБ Давлатов, БТ Абдулазизов, БГ Атабаев «Узбекский физический журнал» 25 (2) , 2023 2023
Influence of nonparabolicity of the dispersion law and temperature on the energy density of states in semiconductor nanowires G Gulyamov, AB Davlatov, DR Urinboev AIP Conference Proceedings 2700 (1), 050004 , 2023 2023
Concentration, thermodynamic density of states, and entropy of electrons in semiconductor nanowires G Gulyamov, AB Davlatov, KN Juraev Low Temperature Physics 48 (2), 148-156 , 2022 2022 Citations: 12
Calculation of the energy levels and wave functions of electrons in nanowires by the shooting method G Gulyamov, AB Davlatov, ST Inoyatov, SA Makhmudov Journal of Applied Science and Engineering 25 (1), 31-36 , 2022 2022 Citations: 19
Статистика электронов в полупроводниковых нанонитях Г Гулямов, АБ Давлатов, ХН Жураев «Узбекский физический журнал» 22 (5), 275-281 , 2020 2020 Citations: 2
Energy Levels in Nanowires and Nanorods with a Finite Potential Well G Gulyamov, AG Gulyamov, AB Davlatov, KN Juraev Advances in Condensed Matter Physics 2020 , 2020 2020 Citations: 19
Electron energy in rectangular and cylindrical quantum wires G Gulyamov, AG Gulyamov, AB Davlatov, BB Shahobiddinov Journal of Nano- and Electronic Physics 12 (4), 04023 , 2020 2020 Citations: 26
ВЛИЯНИЕ ИОНИЗОВАННЫХ ПРИМЕСЕЙ И МИКРОТРУБОК НА ВАХ pn-4Н-SiC-ПЕРЕХОДА АГ Гулямов, ХН Жураев, АБ Давлатов, МУ Хажиев, БГ Атабаев, ... «Узбекский физический журнал» 22 (1), 39-43 , 2020 2020
ШИРИНА КВАЗИСТАЦИОНАРНЫХ УРОВНЕЙ И ПЛОТНОСТЬ СОСТОЯНИЙ ДВУМЕРНОГО ЭЛЕКТРОННОГО ГАЗА БТ Абдулазизов, АБ Давлатов, ШТ Иноятов, АА Хакимов «Узбекский физический журнал» 20 (5), 287-290 , 2018 2018
MOST CITED SCHOLAR PUBLICATIONS
Electron energy in rectangular and cylindrical quantum wires G Gulyamov, AG Gulyamov, AB Davlatov, BB Shahobiddinov Journal of Nano- and Electronic Physics 12 (4), 04023 , 2020 2020 Citations: 26
Calculation of the energy levels and wave functions of electrons in nanowires by the shooting method G Gulyamov, AB Davlatov, ST Inoyatov, SA Makhmudov Journal of Applied Science and Engineering 25 (1), 31-36 , 2022 2022 Citations: 19
Energy Levels in Nanowires and Nanorods with a Finite Potential Well G Gulyamov, AG Gulyamov, AB Davlatov, KN Juraev Advances in Condensed Matter Physics 2020 , 2020 2020 Citations: 19
Concentration, thermodynamic density of states, and entropy of electrons in semiconductor nanowires G Gulyamov, AB Davlatov, KN Juraev Low Temperature Physics 48 (2), 148-156 , 2022 2022 Citations: 12
Broadening thermal energy levels and density states quasi one-dimensional electron gas PJ Baymatov, AG Gulyamov, AB Davlatov, BB Uzakov J Appl Math Phys 4 (04), 706-710 , 2016 2016 Citations: 8
Strain, pressure and temperature effects on linear and nonlinear optical properties of InP/InAs 1−x P x /InP quantum well heterostructures AB Davlatov, AH Hameed, K Feddi, PJ Baymatov, BT Abdulazizov, ... Applied Physics A 131 (1), 1 , 2025 2025 Citations: 6
Thermodynamic properties of electron gas in semiconductor nanowires A Davlatov, G Gulyamov, D Urinboev Journal of Low Temperature Physics 212 (1), 36-53 , 2023 2023 Citations: 5
Thermodynamic and magnetic properties of cylindrical of nanoshell GaAsMn considering Rashba spin–orbit coupling M Kria, M El-Yadri, LM Peréz, A Tiutiunnyk, P Díaz, L Pedraja-Rejas, ... Physica Scripta 100 (8), 085958 , 2025 2025 Citations: 4
Unraveling the effects of non-parabolicity on electron energy levels in InP/InAs/InP heterostructures A Davlatov, G Gulyamov, A Nabiyev, E Feddi, K Feddi, A Abdukarimov, ... Physica Scripta 99 (7), 075933 , 2024 2024 Citations: 3
Entropy of electron gas in semiconductor nanowires G Gulyamov, AB Davlatov, DR Urinboev Low Temperature Physics 49 (9), 1066-1071 , 2023 2023 Citations: 3
New Method of Determining the Landau Levels in Narrow-Gap Semiconductors G Gulyamov, UI Erkaboev, GN Majidova, MO Qosimova, AB Davlatov Open Journal of Applied Sciences 5 (12), 771-775 , 2015 2015 Citations: 3
Lattice mismatch, pressure and temperature effects on linear and nonlinear optical properties of InAs nanodots embedded in InAsP nanowires A Davlatov, K Feddi, B Abdulazizov, D Urinboev, R Mukhiddinov Journal of Luminescence 286, 121334 , 2025 2025 Citations: 2
Energy levels of nanodots inside semiconductor nanowires A Davlatov, G Gulyamov, D Urinboev Brazilian Journal of Physics 54 (4), 125 , 2024 2024 Citations: 2
Статистика электронов в полупроводниковых нанонитях Г Гулямов, АБ Давлатов, ХН Жураев «Узбекский физический журнал» 22 (5), 275-281 , 2020 2020 Citations: 2
Quantum shape effects and influence of electric fields on energy levels and thermodynamic properties of electron gas in semiconductor nanowires A Davlatov, K Feddi, G Gulyamov, B Abdulazizov Physica B: Condensed Matter, 417721 , 2025 2025 Citations: 1
Effect of Hydrostatic Pressure and Temperature on Thermodynamic Properties of Electron Gas in Narrow Bandgap Semiconductor Nanowires A Davlatov, G Gulyamov, E Feddi, K Feddi, A Khalmirzaev, S Inoyatov Journal of Low Temperature Physics 218 (3), 166-192 , 2025 2025 Citations: 1
Strain effects on the linear and nonlinear optical properties of InP/InAsP/InP quantum well A Davlatov, B Abdulazizov, A Abdukarimov «Узбекский физический журнал» 28 (1) , 2026 2026
Optical properties of a cubic InAs quantum dot embedded in a rectangular-based InAsP nanowire A Davlatov, B Abdulazizov, D Urinboev «Узбекский физический журнал» 27 (3) , 2025 2025
Омический контакт для n-4H-SiC ХН Жураев, МУ Хажиев, АБ Давлатов, БТ Абдулазизов, БГ Атабаев «Узбекский физический журнал» 25 (2) , 2023 2023
Influence of nonparabolicity of the dispersion law and temperature on the energy density of states in semiconductor nanowires G Gulyamov, AB Davlatov, DR Urinboev AIP Conference Proceedings 2700 (1), 050004 , 2023 2023
