Low frequency hybrid instability in semi-relativistic GaAs plasmas

Iqbal, Aneesa; Ali, Mohsen; Jamil, Muhammad; Rasheed, A.

doi:10.1088/1402-4896/ac1cf5

Cited by 2 publications

(1 citation statement)

References 47 publications

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“…The Dielectric function where

ε

1 (ω) indicates real parts and

ε

2 (ω) indicates the imaginary portion of dielectrics function. Real parts

ε

1 (ω) measure total energy of electric field and, imaginary parts

ε

2 (ω) represents electronic transitions energy loss within the energy levels [20, 21]. Table 1 represents calculated dielectric constant and refractive index.…”

Section: Resultsmentioning

confidence: 99%

An ab‐initio study of structural, opto‐electronic and thermoelectric aspects of zinc sulfide and zinc telluride

Erum,

Ahmad,

Okla

2023

Int J of Quantum Chemistry

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In this study, structural, electronic, optical and thermoelectric aspects of Zinc Sulfide (ZnS) and Zinc Telluride (ZnTe) have been explored in detail. These calculations have been done by utilizing FP‐LAPW method via Density Functional Theory (DFT). In order to attain accurate band gaps, opto‐electronic properties are evaluated with modified Becke Johnson potential (mBJ). From band structure plots, both ZnS and ZnTe reveals direct (Γv–ΓC) band gap semiconductors in nature with bandgap value equal to 3.5 and 2.3 eV while in Density Of States (DOS) major influence is observed due to p states of S/Te and d state of Zn. Prominent variation of optical responses such as high values of imaginary dielectric constants 𝜀1 (ω) and n (ω) refractive index suggests that ZnS and ZnTe are applicant materials for future photonics and microelectronic devices. The thermoelectric aspects were explored by Boltz Trap code to determine electrical and thermal conductivities, Seebeck coefficients, power factors and figure of merit. The figure of merits is closer to 1 while compared with p‐type ZnS and ZnTe, n‐type ZnS and ZnTe has good thermoelectric properties, which are attributed to low thermal conductivity of the hole and larger effective mass. The goal of this research is to investigate not only the detailed physical aspects but also to provide an overview of its future applications in optoelectronics, displays, sensors and microelectronic industry.

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“…The Dielectric function where

ε

1 (ω) indicates real parts and

ε

2 (ω) indicates the imaginary portion of dielectrics function. Real parts

ε

1 (ω) measure total energy of electric field and, imaginary parts

ε

2 (ω) represents electronic transitions energy loss within the energy levels [20, 21]. Table 1 represents calculated dielectric constant and refractive index.…”

Section: Resultsmentioning

confidence: 99%

An ab‐initio study of structural, opto‐electronic and thermoelectric aspects of zinc sulfide and zinc telluride

Erum,

Ahmad,

Okla

2023

Int J of Quantum Chemistry

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Kelvin–Helmholtz instability in magnetically quantized dense plasmas

Rasheed,

Nazir,

Fatima

et al. 2023

Zeitschrift Für Naturforschung A

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This study deals with the instability of shear waves, also known as Kelvin–Helmholtz instability, propagating with a complex frequency ”ω” in magnetically quantized dense gyro-viscous plasmas. The instability arises from the transverse spatial shear of the streaming velocity, which evolves from the DC electric and magnetic fields. In dense plasmas, quantum effects contribute through magnetically quantized statistical Fermi pressure, tunnelling potential and exchange-correlation potential. The contribution of the shear profile, the drift velocity, the number density of medium species, the dc magnetic field and the propagation angle θ of the wavevector on the instability is pointed out analytically as well as graphically. By varying the angle, shear size and density of plasma particles, the growth rate is enhanced. It does not, however, change as the streaming speed increases. This work seeks applications to study the characteristics of complex media like astrophysical and semiconductor plasmas [R. P. Drake, “Hydrodynamic instabilities in astrophysics and in laboratory high-energy–density systems,” Plasma Phys. Control. Fusion, vol. 47, p. B419, 2005].

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Low frequency hybrid instability in semi-relativistic GaAs plasmas

Cited by 2 publications

References 47 publications

An ab‐initio study of structural, opto‐electronic and thermoelectric aspects of zinc sulfide and zinc telluride

An ab‐initio study of structural, opto‐electronic and thermoelectric aspects of zinc sulfide and zinc telluride

Kelvin–Helmholtz instability in magnetically quantized dense plasmas

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