Predictive of the quantum capacitance effect on the excitation of plasma waves in graphene transistors with scaling limit

Nanoscale ◽  
2015 ◽  
Vol 7 (16) ◽  
pp. 7284-7290 ◽  
Author(s):  
Lin Wang ◽  
Xiaoshuang Chen ◽  
Yibin Hu ◽  
Shao-Wei Wang ◽  
Wei Lu
Keyword(s):  
Scaling Limit ◽  
Plasma Waves ◽  
Quantum Capacitance ◽  
Band Engineering ◽  
Capacitance Effect ◽  
Propagation Properties ◽  
The Way

We study the excitations and propagation properties of plasma waves in nanometric graphene FETs down to the scaling limit. This study reveals the key feature of plasma waves in decorated/nanometric graphene FETs, and paves the way to tailor plasma band-engineering.

Random tensor models—the U(N)D-invariant model

2021 ◽  
pp. 178-208
Author(s):  
Adrian Tanasa
Keyword(s):  
Scaling Limit ◽  
Point Function ◽  
Invariant Model ◽  
Invariant Tensor ◽  
The Third ◽  
Tensor Models ◽  
Random Tensor ◽  
Combinatorial Methods ◽  
Double Scaling Limit ◽  
The Way

In the first section we give a briefly presentation of the U(N)D-invariant tensor models (N being again the size of the tensor, and D being the dimension). The next section is then dedicated to the analysis of the Dyson–Schwinger equations (DSE) in the large N limit. These results are essential to implement the double scaling limit mechanism of the DSEs, which is done in the third section. The main result of this chapter is the doubly-scaled 2-point function for a model with generic melonic interactions. However, several assumptions on the large N scaling of cumulants are made along the way. They are proved using various combinatorial methods.

TCAD Simulations of graphene field-effect transistors based on the quantum capacitance effect

2015 ◽  
Vol 67 (7) ◽  
pp. 1201-1207 ◽  
Author(s):  
Bilel Hafsi ◽  
Aïmen Boubaker ◽  
Naoufel Ismaïl ◽  
Adel Kalboussi ◽  
Kamal Lmimouni
Keyword(s):  
Field Effect ◽  
Field Effect Transistors ◽  
Quantum Capacitance ◽  
Capacitance Effect ◽  
Tcad Simulations

Rossby-type electrostatic electron plasma waves

1989 ◽  
Vol 41 (2) ◽  
pp. 395-404
Author(s):  
J. F. McKenzie ◽  
K. Naidu
Keyword(s):  
Rossby Waves ◽  
Plasma Waves ◽  
Electron Plasma ◽  
Spatial Gradient ◽  
Rotating Fluid ◽  
Wave Dynamics ◽  
Wave Solutions ◽  
Cyclotron Mode ◽  
Electron Gyrofrequency ◽  
Propagation Properties

This paper explores the properties of Rossby-type electrostatic electron plasma waves at frequencies very much less than the electron gyrofrequency but very much greater than the ion gyrofrequency. Such waves represent the electron counterpart of ion Rossby waves, which propagate at frequencies very much less than the ion gyrofrequency in a plasma in which the ambient magnetic field possesses a spatial gradient perpendicular to its line of action. This feature simulates the ‘β-effect’ that operates in the classical atmospheric Rossby wave: the wave dynamics associated with both ion and electron Rossby waves are structurally similar to those associated with wave perturbations in a rotating fluid, where the β-effect arises from a spatial gradient in the Coriolis acceleration. It is shown that this plasma β-effect gives rise to a ‘new’ mode of the Rossby type, and in addition considerably modifies the conical wave propagation properties characteristic of the electron cyclotron mode. The highly dispersive and anisotropic nature of these waves is described in terms of the topology of the wavenumber surfaces concomitant with plane-wave solutions of the wave equation for the system as a whole.

QUANTUM CAPACITANCE EFFECT ON ZIG-ZAG GRAPHENE NANOSCROLLS (ZGNS) (16, 0)

2012 ◽  
Vol 27 (01) ◽  
pp. 1350002 ◽  
Author(s):  
AFIQ HAMZAH ◽  
M. T. AHMADI ◽  
RAZALI ISMAIL
Keyword(s):  
Quantum Effect ◽  
Quantum Capacitance ◽  
Archimedean Spiral ◽  
Capacitance Effect ◽  
High Area ◽  
Physical Form ◽  
Quantum Limits ◽  
Nano Size ◽  
Spiral Type ◽  
Taylor’S Series

Miniaturization of electronic devices carries them to the quantum limits which mean quantum effect will be dominant in nano-size device characterization. A first band analytical model of the quantum capacitance for (16, 0) zig-zag graphene nanoscroll (ZGNS) is presented. The behavior of the quantum capacitance within the degeneracy limits is approximated using the Maxwell–Boltzmann approximation within a range of E - EF > 3KBT. The quantum capacitance is subsequently derived from the carrier density of the ZGNS due to its significance within one-dimensional (1D) devices by employing the Taylor's series expansion for parabolic energy band structure approximation. Additionally, the quantum capacitance analytical derivation in term of ZGNS physical form considering the Archimedean spiral-type structure is modeled. Because of its unique geometry structure which provides high area for intercalation, it is expected that ZGNS structure (length and interlayer distances) will alter the quantum capacitance. We also report that at first sub-band of (16, 0) ZGNS the quantum capacitance reach degenerate limit at approximately of ≅ 0.49 × 10-10 F/m @ 49 pF/m .

Self-sacrifice for in-group's history: A diachronic perspective

2018 ◽  
Vol 41 ◽  
Author(s):  
Maria Babińska ◽  
Michal Bilewicz
Keyword(s):  
Clinical Psychology ◽  
Historical Events ◽  
Emotional Events ◽  
Reciprocal Process ◽  
The Way

AbstractThe problem of extended fusion and identification can be approached from a diachronic perspective. Based on our own research, as well as findings from the fields of social, political, and clinical psychology, we argue that the way contemporary emotional events shape local fusion is similar to the way in which historical experiences shape extended fusion. We propose a reciprocal process in which historical events shape contemporary identities, whereas contemporary identities shape interpretations of past traumas.

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