Outstanding tunable electrical and optical characteristics in monolayer silicene at high terahertz frequencies

Emami-Nejad, Hamed; Mir, Ali; Farmani, Ali; Talebzadeh, Reza

doi:10.1007/s10825-022-01875-z

Cited by 2 publications

(4 citation statements)

References 41 publications

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“…By solving equation (1), the conductivity of silicene is calculated as σ = σ intra + σ inter . σ intra is obtained as follows [38]:…”

Section: Silicene Modelingmentioning

confidence: 99%

“…SO that Ê is the electric field component perpendicular to the surface of silicene and = d 0.46 Å is the vertical distance of the atoms of the sublattice A and B of silicene [38]. D = meV 3.9…”

Section: Silicene Modelingmentioning

confidence: 99%

“…indicates the intensity of SOC. G = -eV 10 5 is the phenomenological scattering rate [38]. Finally, s inter is as follow [38]:…”

Section: Somentioning

confidence: 99%

“…where θ is a Heaviside function that is defined as follows [38]: 2 also shows the real and imaginary parts of graphene surface conductivity at 300 K [39]. As you can see, the imaginary parts of graphene and silicene are about the same, but the real part of graphene is about 25 times larger.…”

Section: Somentioning

confidence: 99%

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A silicene-based plasmonic electro-optical switch in THz range

Emami-Nejad¹,

Mir²,

Farmani³

et al. 2022

Phys. Scr.

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The first design and simulationof a silicene-based optical switch in the frequency range of 20 to 50 THz are presented. Silicene is a monolayer of silicon atoms stacked together in the shape of a honeycomb that has outstanding features such as compatibility with current technology, strong spin-orbital coupling, and attractive optical properties. The proposed switch consists of a silicene waveguide encapsulated between layers of Al2O3 which transmits the input signal by emitting surface plasmon polaritons. To control the ON and OFF switching modes using impurities and DC voltage, we change the chemical potential of silicene. The main advantages of the proposed switch over similar graphene types are fewer losses, broadband frequency range, more compatibility with current technology,and also due to the encapsulation of silicene between Al2O3, the waveguide is isolated from the environment. Also, Q-factor, insertion loss, and extinction ratio for the proposed switch are 189, 0.39 dB, and 51 dB, respectively.

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“…By solving equation (1), the conductivity of silicene is calculated as σ = σ intra + σ inter . σ intra is obtained as follows [38]:…”

Section: Silicene Modelingmentioning

confidence: 99%

Section: Silicene Modelingmentioning

confidence: 99%

“…indicates the intensity of SOC. G = -eV 10 5 is the phenomenological scattering rate [38]. Finally, s inter is as follow [38]:…”

Section: Somentioning

confidence: 99%

Section: Somentioning

confidence: 99%

See 2 more Smart Citations