Magneto-thermoelectric effects in two-dimensional quantum well: role of short-range potential

Hashimzade, F. M.; Hasanov, Kh. A.; Mehdiyev, B. H.; Çakmak, Seyfettin

doi:10.1088/0031-8949/81/01/015701

Cited by 10 publications

(4 citation statements)

References 20 publications

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“…Here, K L is the lattice heat conductivity and should be neglected for simplicity because of its small value in 2DS [5]. According to Eqs.…”

Section: Are the Creation And Annihilation Operators Of Electron (Phonon);mentioning

confidence: 99%

“…The quantum Ettingshausen effect is a thermomagnetoelectric effect detected when studying the Hall effect in Bismuth. Many papers related to this issue have been published [5][6][7][8][9]. At low temperatures, the transverse Nernst-Ettingshausen effect in a quantum well monotonically increases when the temperature gradient is along the direction of free motion [5].…”

Section: Introductionmentioning

confidence: 99%

“…Many papers related to this issue have been published [5][6][7][8][9]. At low temperatures, the transverse Nernst-Ettingshausen effect in a quantum well monotonically increases when the temperature gradient is along the direction of free motion [5]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

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Doped Two-dimensional Semiconductor Superlattice: Photo-stimulated Quantum Thermo-magnetoelectric Effects under the Influence of a Confined Phonon

Bau

Quỳnh

et al. 2020

J. Korean Phys. Soc.

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Photo-stimulated quantum thermo-magnetoelectric effects in doped two-dimensional semiconductor superlattices, including the photo-stimulated quantum Ettingshausen effect and the photostimulated quantum Peltier effect, have been theoretically studied by using the quantum kinetic equation method. In this work, we assume that the electron-confined acoustic phonon scattering is essential. Moreover, the presence of the laser radiation (LR) is also taken into account to determine the influence of confined phonons on the aforementioned effects. We have defined the analytical expressions for the kinetic tensors and the Ettingshausen and the Peltier coefficients, presented the numerically calculated the theoretical results for the GaAs:Si/GaAs:Be doped semiconductor superlattice and compared them with these for the case of an unconfined acoustic phonon. The results obtained indicated that the formulas for the kinetic tensors, the Ettingshausen coefficient (EC) and the Peltier coefficient (PC) contain the quantum number m specifying the confinement of a phonon and approach the results for an unconfined phonon as m goes to zero. We found that the kinetic tensors, the EC and the PC oscillate with changing magnetic field and that the confinement of a phonon causes a shift of the peaks in these oscillations to lower energy. The dependences of both EC and PC on the temperature were found to be nonlinear. Moreover, all the coefficients level off when the temperature was less than 4.5 K or greater than 5.5 K. The EC also depended on the doping concentration in a nonlinear way and reaches a positive constant value when the semiconductor superlattice was doped with a high concentration. Most of the numerical results showed that the magnitude of the tensors, the EC as well as the PC, within a confined acoustic phonon varie significantly in comparison with the unconfined phonon case. This means that the confinement of the phonon affects the thermo-magnetoelectric effect quantitatively and qualitatively. These results contribute to completing the theory of the thermo-magnetoelectric effects in the low-dimensional semiconductor systems.

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“…Here, K L is the lattice heat conductivity and should be neglected for simplicity because of its small value in 2DS [5]. According to Eqs.…”

Section: Are the Creation And Annihilation Operators Of Electron (Phonon);mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Doped Two-dimensional Semiconductor Superlattice: Photo-stimulated Quantum Thermo-magnetoelectric Effects under the Influence of a Confined Phonon

Bau

Quỳnh

et al. 2020

J. Korean Phys. Soc.

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“…Transverse thermomagnetic effects in quantum wells with parabolic potential under the presence of EMW has been studied by using Boltzmann kinetic equation [3,4], in the quantum limit, the dependencies of the transverse Nernst-Ettingshausen coefficient and the thermopower on the magnetic field strength, the temperature and the carrier density have been determined and analyzed. The Seebeck, Hall, Nernst, Peltier, Ettingshausen, and Righi-Leduc effects under the presence of magnetic field has been investigated and compared experimentally in [5].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of the Magneto-Thermoelectric Effect in Doped Semiconductor Superlattices under the Influence of an Electromagnetic Wave by Using a Quantum Kinetic Equation

Hang

Nhan

Bau

2018

KEM

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By using a quantum kinetic equation for electrons, we studied magneto - thermoelectric effects in the doped semiconductor superlattice (DSSL) under the influence of electromagnetic waves (EMW). In case of the electron - acoustic phonon interaction, we have also figured out analytical expressions of the Ettingshausen coefficient (EC) in DSSL. These expressions are quite different from those which were obtained in the case of bulk semiconductors. The results are numerically calculated for the GaAs:Be/ GaAs:Si DSSL; we found that the EC depends on the characteristic parameters of EMW, temperature and the characteristic parameters of DSSL. The results are consistent with recently experimental observations but the EC is different from that in the bulk semiconductors or bismuth. In addition, the impact of the EMW on the Ettingshausen effect was also discovered. These are latest results which have been studied in terms of Ettingshausen effect in DSSL.

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Theoretical study of photo-stimulated thermo-magnetoelectric effects in two-dimensional compositional superlattices using quantum kinetic equation

Bau

Quỳnh

et al. 2022

J. Korean Phys. Soc.

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Magneto-thermoelectric effects in two-dimensional quantum well: role of short-range potential

Cited by 10 publications

References 20 publications

Doped Two-dimensional Semiconductor Superlattice: Photo-stimulated Quantum Thermo-magnetoelectric Effects under the Influence of a Confined Phonon

Doped Two-dimensional Semiconductor Superlattice: Photo-stimulated Quantum Thermo-magnetoelectric Effects under the Influence of a Confined Phonon

Theoretical Study of the Magneto-Thermoelectric Effect in Doped Semiconductor Superlattices under the Influence of an Electromagnetic Wave by Using a Quantum Kinetic Equation

Theoretical study of photo-stimulated thermo-magnetoelectric effects in two-dimensional compositional superlattices using quantum kinetic equation

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