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From the last decade, Nitride-based High Electron Mobility Transistors (HEMTs) have demonstrated excellent electrical and noise performances to address transceivers modules. Within this paper, a discussion on the low frequency noise on the gate access (i.e. gate current spectral density SIG) in the frequency range of 1Hz–100kHz is presented. SIG spectra reveal different signatures according to the...
The low-frequency noise (LFN) behavior of ultra thin body and buried oxide (UTBB) fully-depleted (FD) silicon-on-insulator (SOI) n-channel MOSFETs has been explored, emphasizing on the contribution of the buried-oxide (BOX) and the Si-BOX interface to the total drain current noise level. In order to successfully distinguish the different noise sources, measurements under different front and back gate...
The low-frequency fluctuations of tunneling current in GaAs/AlAs/GaAs single-barrier heterostructure devices were measured for three samples with different Si-planar-doping in the center of 10.2 nm-thick barrier. The diameter of the mesas were close to 100 micrometers. Upon changes of the biasing voltage across the barrier the character of noise spectra also changed — depending on various electron...
Thin conducting gold films with nanoconstriction are characterized by noise spectroscopy with and without a single 1,4-benzenedithiol (BDT) molecule between the contacts. The low frequency noise spectral density demonstrates the 1/fα type behavior with a factor, α, near to 1. It is shown, that the normalized noise spectral density is proportional to the resistance R in power 3/2 for the case without...
In this work, we focus on the finite frequency current-current correlations between edge states in a fractional quantum Hall two dimensional gas and on their relations to the quantum admittance. Using a refermionization method, we calculate these quantities within the same framework. Our results apply whatever the values of backscattering amplitude, frequency, voltage and temperature, allowing us...
Mental stress has been an issue in modern society. Several studies have investigated the detection of mental stress using physiological indices. However, measurement of these indices would itself impart a certain level of stress to subjects. The temporal dynamics of key typing are called “keystroke dynamics”. Keystroke dynamics show variations with psychological subtlety. The objective of this study...
The scale-invariant and intermittent dynamics of human behavior are currently attracting great scientific interest. We have recently reported the universal laws of behavioral organization, especially those describing the complexity of behavioral dynamics, shared by humans and wild-type mice. We also demonstrated the alterations of the law of resting period distributions shared among patients with...
We analyze the response of a nonlinear circuit exactly ruled by the FitzHugh-Nagumo equations. This circuit is submitted to a bichromatic signal including a high frequency and a low frequency. In absence of noise, we show that for an appropriate amplitude of the high frequency driving, the response of the circuit estimated at the low frequency can be optimized via the phenomenon of vibrational resonance...
This paper shows that in certain conditions fundamental 1/f noise in a semiconductor sample is increased by the presence of another similar current-carrying sample located in the close vicinity. This proximity effect is described by simple formulas derived here. The paper displays the connection between coherent and conventional quantum 1/f effect in terms of the s-parameter, i.e., the ratio between...
The ionic permeation of a biological ion channel is a multi-particle, non-equilibrium, stochastic process. Brownian dynamics simulations for a simple electrostatic model of the calcium channel reveal regular structure in the conductance and selectivity as functions of the negative fixed charge Qf on the protein wall at the selectivity filter. This structure consists of distinct high conductance regions...
Based on the formula for the energy spectrum of fluctuations in the non-equilibrium systems it is explained the existence of flicker-noise in nature and technique: energy spectrum of fluctuations of parameters of any real system (system that is in unbalanced state) always contains flicker component of spectrum. Only if system is in balanced state (ideal variant) flicker component is absent in energy...
This paper is devoted to the influence of internal noise in a sine-Gordon chain exhibiting the well known nonlinear supratransmission phenomenon. It is shown that spatiotemporal noise can trigger breather modes with a given probability in a range of parameters where they do not occur without noise. A frequency analysis is carried out to quantify the degree of coherence of the emitted breather. It...
The conductivity and low frequency noise of n-and p-type Si nanowire arrays are measured in humid and dry environments. It was found that the conductivity increases for both n- and p-type arrays in a humid environment. The low frequency noise characteristics indicate a change in the carrier transport process from noise governed by trapping processes at the interface in a humid environment to noise...
This paper deals with the optimization of the “spinning-current” modulation method for cancelling the low-frequency noise at the output of a Hall sensor. This method, based on Onsager reciprocity relationships through the reverse-magnetic-field-reciprocity theorem of Sample et al., allows extracting magnetic field signals whose spectral intensity is much lower than the PSD of the low-frequency (LF)...
Electron mobility variance in metals and degenerate semiconductors is discussed on the basis of distribution function fluctuation approach. An analytical expression for electron mobility variance is obtained and analyzed. It is established that the mobility variance in Fermi gas depends on average electron concentration, temperature and the electron scattering mechanism. It is revealed that mobility...
The influence of an external uniform electric field on electron mobility variance in non-degenerate n-type semiconductor is discussed. Analyzing the result of mobility fluctuation theory, according to which electron mobility variance in equilibrium semiconductor equals infinity, it is shown that in the presence of uniform electric field mobility variance becomes finite. The effect is explained in...
The paper presents the modeling of a heat balanced sigma-delta bolometer with Matlab Simulink®. In particular, the noise sources are modeled to enable the evaluation of the output measurement resolution.
Silicon-based devices, circuits and systems are expected to continue to dominate the semiconductor and electronics industries in the near to medium-term. However, to maintain this dominance, several innovations have been made in fabrication technologies, material systems, device architecture, and circuit and system designs. While these innovations have helped to improve their large-signal properties...
This paper is aimed at exploring efficient approaches for the simulation of Random Telegraph Noise (RTN) in variability analysis of advanced floating gate non-volatile memories. RTN is traced back to randomly occupied localized traps located close to the Si/SiO2 interface. While the effect of traps has been investigated previously by means of time-consuming Monte Carlo simulations [1], in this work...
We investigate shot noise suppression associated with coherent tunneling in a triple barrier resonant diode (TBRD). Here, due to the interaction between the two resonant states, the transmission probability, D (∊), can be non Lorentzian even in the case when the resonant level is far from the bottom of the emitter conduction band. We find that the resonant feature is narrower than that of the double...
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