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Phonon scattering
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The result indicates that in the case of electron-acoustic phonon scattering, the Shubnikov-de Hass oscillation appears. Whereas, in the case of electrons-optical phonons scattering, the peak of magneto-photonphonon resonance appears. In both cases, when temperature increases, the Nernst coefficient decreases rapidly, and for electrons-optical phonons scattering, the resonance peak has a movement.
10p
viambani
18-06-2024
1
1
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Based on the quantum kinetic equation for electrons, we theoretically studied the Quantum Multi-photon Nonlinear Absorption of a Strong Electromagnetic Wave (EMW) in twodimensional graphene with electron-optical phonon scattering mechanism.
9p
viambani
18-06-2024
3
1
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In this work, we present a study of phonon hardening of 762 cm-1 phonon which is the strongest Raman-active mode in pyrochlore Cd2Os2O7 single crystal through temperature dependent Raman scattering. We discuss that the major contribution of the phonon hardening and the anomarlie behavior of asymmetry Fano parameter would involve to spin-phonon coupling and electronphonon coupling.
8p
viambani
18-06-2024
2
1
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Part 1 book "Problems in solid state physics with solutions" includes content: Drude theory of metals, sommerfeld theory of metals, bravais lattice, point groups, classification of bravais lattices, space groups of crystal structures, scattering of X-rays by a crystal, reciprocal lattice, X-ray diffraction on crystals, crystal structure by neutron diffraction, bonding in solids, cohesion of solids, normal modes of lattice vibrations, quantum theory of lattice vibrations, inelastic neutron scattering by phonons, origin of electronic energy bands.
146p
muasambanhan10
06-04-2024
1
0
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Ebook "Quasielastic neutron scattering: Principles and applications in solid state chemistry, biology, and materials science" is to provide a state of the art exposition of quasielastic neutron scattering both for specialists in this subject and for those who work in related fields such as NMR, infrared and Raman spectroscopy. Quasielastic Neutron Scattering starts with a thorough grounding in basic theory and then describes the instruments and methods used in cold neutron scattering such as neutron spin-echo spectrometers.
444p
loivantrinh
29-10-2023
3
2
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We applied the quantum kinetic equation method to investigate the influence of confined optical phonons (confined OP) on the photo-stimulated Ettingshausen effect in rectangular quantum wires (RQW) subjected to a perpendicular magnetic field. We considered the case where the confined electrons-confined OP scattering is the dominant mechanism.
7p
viberkshire
09-08-2023
5
3
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Theoretical results for the AME field is numerically evaluated, plotted and discussed for the specific CQWIP AlGaAs/GaAs. The result shows that the dependence of the AME field on the temperature of the system is nonlinear. These results are compared with those of normal bulk semiconductors and quantum well to show the difference.
3p
vispyker
16-11-2022
8
3
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The nonlinear acoustoelectric (NAE) current in a doping superlattice (DSL) is investigated for an acoustic wave in the region ql>>1 (where q is the acoustic wave number) in the presence of an electromagnetic wave.
4p
vilexus
30-09-2022
7
2
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The results in this case are compared with the case of the bulk semiconductors show the difference and the novelty of the results. The results numerically calculated for GaAs/AlGaAs in order to show the dependence of absorption coefficient on the photon energy of the temperature, the size of the asymmetric semi-parabolic quantum wells.
8p
viindranooyi
07-05-2022
9
2
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Quantum theory of nonlinear absorption of strong electromagnetic wave (EMW) by confined electrons in two - dimensional (2D) graphene without magnetic field has been studied by using the quantum kinetic equation in assumption of electron - optical phonon scattering. The analytic expression of absorption coefficient is obtained in 2D graphene.
9p
viindranooyi
07-05-2022
11
2
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Based on the quantum kinetic equation for electrons under the action of a linearly polarized electromagnetic wave, a dc electric field and an intense laser field, analytic expressions for the density of the direct current in rectangular quantum wire with an infinite potential for the case of electron - acoustic phonon scattering are calculated.
8p
vijichoo2711
04-06-2021
16
1
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The analytic expressions for the absorption coefficient (ACF) of a weak electromagnetic wave (EMW) caused by confined electrons in the presence of laser radiation modulated by amplitude in doped superlattices (DSL) are obtained by using the quantum kinetic equation for electrons in the case of electron–optical phonon scattering.
11p
tamynhan8
04-11-2020
15
2
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The study results were numerically evaluated and graphed for GaAs/GaAsAl quantum wire. Then, the results in this case were compared with those in the case of the bulk semiconductors and other lowdimension systems in order to show the difference and the novelty of the current results.
8p
tamynhan6
14-09-2020
12
2
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The CdSe, type-II CdSe/CdTe core/shell and type-II/type-I CdSe/CdTe/ZnS core/shell/shell quantum dots (QDs) were successfully synthesized in a noncoordinating solvent. The phonon characterizations, optical properties and structures of the synthesized QDs were characterized by Raman scattering (RS) spectra, photoluminescence (PL) spectroscopy, PL-decay lifetime, absorption spectroscopy (Abs), and X-ray diffraction (XRD).
11p
tamynhan6
14-09-2020
11
2
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The electron – optical phonon scattering is considered in detail to studying the Ettingshausen effect in doped semiconductor superlattice under the influence of phonon confinement and laser radiation. The analytical expressions for tensors and the Ettingshausen coefficient are obtained by using the kinetic equation method.
8p
tamynhan6
14-09-2020
15
1
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Quantum theory of absorption of electromagnetic wave (EMW) by confined electrons in two - dimensional (2D) graphene has been studied by using the quantum kinetic equation in assumption of electron - optical phonon scattering.
10p
vigustavia2711
19-12-2019
11
0
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The influence of confined acoustic phonons on the Hall Coefficient (HC) in a Cylindrycal Quantum Wire (CQW) with an infinite potential (for electron – confined acoustic phonons scattering). Consider a case where CQW is placed in a perpendicular magnetic field
6p
vitheseus2711
24-10-2019
13
0
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In this paper, we have used the method of quantum kinetic equation to calculate the analytic expression for Ettingshausen coefficient (EC) under the influence of confined phonon. We considered a quantum well in the presence of constant electric field, magnetic field and electromagnetic wave (EMW) with assumption that electron – confined optical phonon (OP) scattering is essential.
7p
viposeidon2711
17-09-2019
16
0
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The analytic results have shown that EC depends on temperature, magnetic field, characteristic quantities of EMW and m - quantum number which is specific the confined phonons in a complicated way. The numerical results for GaAs/GaAsAl quantum wells (QW) have displayed these dependence explicitly. In particular, when m is set to zero, we achieve results for magneto – thermoelectric effect in the same QW without the confinement of acoustic phonons.
7p
queencongchua3
07-09-2019
23
4
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The results are numerically evaluated and graphed for a GaAs/GaAsAl CQW to shows clearly the dependence of Hall conductivity and HC on above parameters. The obtained results are very different in comparison to our previous results in the case two-dimensional system (2D) and bulk semiconductor.
9p
thithizone1
18-07-2019
20
0
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