Articles with "effective mass" as a keyword



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Polaron Models with Regular Interactions at Strong Coupling

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Published in 2021 at "Journal of Statistical Physics"

DOI: 10.1007/s10955-021-02851-w

Abstract: We study a class of polaron-type Hamiltonians with sufficiently regular form factor in the interaction term. We investigate the strong-coupling limit of the model, and prove suitable bounds on the ground state energy as a… read more here.

Keywords: models regular; effective mass; polaron models; strong coupling ... See more keywords
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Influence of nonlinear subunits on the resonance frequency band gaps of acoustic metamaterial

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Published in 2018 at "Nonlinear Dynamics"

DOI: 10.1007/s11071-018-4263-5

Abstract: Recently, a significant attention has been directed toward so called ‘acoustic metamaterials’ which have large similarity with already-known ‘electromagnetic metamaterials’ which are applied for elimination of the electromagnetic waves. The stop of electromagnetic waves is… read more here.

Keywords: system; acoustic metamaterial; frequency; effective mass ... See more keywords
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Effective Mass of Holes in Ag0.82Sb1.18Te2.18 and AgSbTe2

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Published in 2020 at "Russian Physics Journal"

DOI: 10.1007/s11182-020-02111-6

Abstract: Temperature dependences of the Hall and Seebeck coefficients in Ag0.82Sb1.18Te2.18 and AgSbTe2 are studied in the temperature range 4.2–320 K. It is found that the Hall coefficient in Ag0.82Sb1.18Te2.18 does not depend on the magnetic… read more here.

Keywords: 82sb1 18te2; 18te2 agsbte2; mass holes; ag0 82sb1 ... See more keywords
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Effective mass and optical properties of orthorhombic Al1−xInxFeO3 perovskite: An ab-initio study

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Published in 2019 at "Computational Materials Science"

DOI: 10.1016/j.commatsci.2018.12.012

Abstract: Abstract Electronic and optical properties of AlFeO3 and Al1−xInxFeO3 (x = 0.25, 0.5, 0.75) are studied using ab-initio calculations. Electronic structure in the vicinity of the conduction band minimum (CBM) and valence band maximum (VBM), the effective… read more here.

Keywords: properties orthorhombic; al1 xinxfeo3; mass optical; optical properties ... See more keywords
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Pore-scale prediction of the effective mass diffusivity of heterogeneous shale structure using the lattice Boltzmann method

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Published in 2019 at "International Journal of Heat and Mass Transfer"

DOI: 10.1016/j.ijheatmasstransfer.2018.12.184

Abstract: Abstract Shale is a kind of heterogeneous porous medium consisting of organic matter (OM), inorganic matter (IM), and interparticle pores. A modified lattice Boltzmann model is developed at the pore-scale to accurately predict the effective… read more here.

Keywords: diffusivity; mass; structure; diffusivity heterogeneous ... See more keywords
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Active feedback control of effective mass density and sound transmission on elastic wave metamaterials

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Published in 2021 at "International Journal of Mechanical Sciences"

DOI: 10.1016/j.ijmecsci.2020.106221

Abstract: Abstract With the active feedback control system on elastic wave metamaterials, this research is concentrated on the effective mass density and sound transmission by a harmonic incident sound pressure. The elastic wave metamaterials consist of… read more here.

Keywords: elastic wave; control; effective mass; mass density ... See more keywords
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Enhanced thermoelectric performance of Bi85Sb15-graphene composite by modulation carrier transport and density of state effective mass

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Published in 2018 at "Journal of Alloys and Compounds"

DOI: 10.1016/j.jallcom.2018.02.040

Abstract: Abstract The Bi-Sb material is regarded as a potential thermoelectric (TE) material for low temperature cooling applications and doping is a commonly used way to modulate the thermoelectric performance of this material. In the present… read more here.

Keywords: microscopy; state effective; graphene; effective mass ... See more keywords
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Influence of the position dependent effective mass on the nonlinear optical properties in semiparabolic and parabolic quantum well with applied magnetic field

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Published in 2019 at "Physica E: Low-dimensional Systems and Nanostructures"

DOI: 10.1016/j.physe.2018.12.034

Abstract: Abstract In the current work, the nonlinear optical properties in GaAs/Ga1−xAlxAs semiparabolic and parabolic quantum well(QW) with constant effective mass(CEM) and position dependent effective mass(PDEM) are estimated for different applied magnetic field. In this regard,… read more here.

Keywords: applied magnetic; magnetic field; nonlinear optical; optical properties ... See more keywords
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Carrier Density, Effective Mass, and Nuclear Relaxation Pathways in Plasmonic Sn:In2O3 Nanocrystals

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Published in 2020 at "Journal of Physical Chemistry C"

DOI: 10.1021/acs.jpcc.0c09448

Abstract: Correlating changes in carrier density arising from incorporating dopant ions into the lattice of a plasmonic semiconductor nanocrystals (NCs) with the observed physical properties at the elemental... read more here.

Keywords: carrier density; effective mass; carrier; density effective ... See more keywords
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Effect of carrier confinement on effective mass of excitons and estimation of ultralow disorder in AlxGa1−xAs/GaAs quantum wells by magneto-photoluminescence

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-05139-w

Abstract: Effect of charge carrier confinement and ultra-low disorder acquainted in AlGaAs/GaAs multi-quantum well system is investigated via Magneto-photoluminescence spectroscopy. Significant increase of effective mass is observed for the confined exciton in narrow QWs. The foremost… read more here.

Keywords: carrier confinement; effective mass; gaas; magneto photoluminescence ... See more keywords
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Conduction-band effective mass and bandgap of ZnSnN2 earth-abundant solar absorber

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Published in 2017 at "Scientific Reports"

DOI: 10.1038/s41598-017-14850-7

Abstract: Pseudo III-V nitride ZnSnN2 is an earth-abundant semiconductor with a high optical absorption coefficient in the solar spectrum. Its bandgap can be tuned by controlling the cation sublattice disorder. Thus, it is a potential candidate… read more here.

Keywords: absorption; bandgap; znsnn2; effective mass ... See more keywords