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MOSFET: Enhancement Mode01:22

MOSFET: Enhancement Mode

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Enhancement-mode MOSFETs are pivotal components in electronics, distinguished by their capacity to act as highly efficient switches. They are part of the larger family of metal-oxide Semiconductor Field-Effect Transistors (MOSFETs). They are available in two types: p-channel and n-channel, each tailored to specific polarity operations.
In their basic form, enhancement-mode MOSFETs are typically non-conductive when the gate-source voltage (Vgs) is zero. This default 'off' state means no...
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Collective excitations in spin-polarized bilayer graphene.

Journal of physics. Condensed matter : an Institute of Physics journal·2020
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Updated: Oct 12, 2025

Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
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Plasmon modes inN-layer silicene structures.

Nguyen Van Men1,2

  • 1An Giang University-VNU HCM, 18-Ung Van Khiem Street, Long Xuyen, An Giang, Vietnam.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|November 23, 2021
PubMed
Summary
This summary is machine-generated.

We studied plasmon properties in multilayer silicene systems. Increasing layers boosts plasmon frequencies, offering tunable optical properties for advanced electronic applications.

Keywords:
collective excitationsmultilayer structuressilicenezero temperature

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanoscience

Background:

  • Silicene, a silicon allotrope analogous to graphene, exhibits unique electronic properties.
  • Understanding plasmonics in multilayer silicene is crucial for novel optoelectronic devices.

Purpose of the Study:

  • Investigate plasmon properties in N-layer silicene systems under an electric field.
  • Analyze the influence of layer number, electric field, spin-orbit coupling, and carrier density on plasmon modes.

Main Methods:

  • Utilized the random-phase approximation for theoretical calculations.
  • Simulated N-layer silicene systems (N up to 6) with out-of-plane electric fields.
  • Incorporated spin-orbit coupling effects.

Main Results:

  • Identified N undamped plasmon modes (1 optical, N-1 acoustic).
  • Observed increased plasmon frequencies with more layers, exceeding single-layer silicene.
  • Found plasmon frequencies decrease with increasing bandgap and imbalanced carrier density.

Conclusions:

  • Multilayer silicene exhibits tunable plasmonics with potential for high-frequency applications.
  • Plasmon properties are sensitive to layer number, electric field, and carrier distribution.
  • Silicene's plasmonics share similarities with graphene under specific conditions.