نتایج جستجو برای: non equilibrium greens function negf
تعداد نتایج: 2479936 فیلتر نتایج به سال:
This work discusses the proposal of a spintronic neuromorphic system with spin orbit torque-driven domain wall motion (DWM)-based neurons and synapses. We propose voltage-controlled magnetic anisotropy DWM-based tunnel junction (MTJ) neuron. investigate how electric field at gate (pinning site), generated by voltage signals from pre-neurons, modulates DWM, which reflects in nonlinear switching ...
The experimental observation of the Dirac fermion states in $\beta_{12}$-borophene sheets and discovery their novel topological properties have made them a promising candidate for spintronic applications. Here, by combining non-equilibrium Green's function (NEGF) tight-binding (TB) approximation, we study charge spin transport through nanoribbon (BNR) with different edge shapes. We show when BN...
Address correspondence to [email protected] ABSTRACT In contrast to the static operations of conventional semiconductor devices, the dynamic conformational freedom in molecular devices opens up the possibility of using individual molecules as new types of devices such as a molecular conformational switch or for molecular data storage. Bistable molecules such as those having two stable c...
I give a simple general prescription for computing the spectral functions of local operators in the Tomonaga-Luttinger model from the space-time correlation functions. The method is significantly simpler than directly transforming the space-time Greens function and allows a physical interpretation of the singularities encountered in the spectral function. 71.20.-b, 71.27.+a, 79.60.-i Typeset us...
A comprehensive study of Schottky barrier MOSFET (SBMOSFET) scaling issue is performed to determine the role of wafer orientation and structural parameters on the performance of this device within Non-equilibrium Green's Function formalism. Quantum confinement increases the effective Schottky barrier height (SBH). (100) orientation provides lower effective Schottky barrier height in compa...
Carbon-based materials are the promising candidates for design of multifunctional spintronic devices, owing to their fascinating inherent attributes such as ballistic transport nature, long spin coherence time, etc. Here, we report spin-dependent electron properties a trans-polyacetylene channel sandwiched between two semi-infinite hydrogen-passivated zigzag graphene nanoribbon (ZGNR) electrode...
In this paper a non-linear model with fractional order is presented for analyzing and controlling the spread of HIV virus. Both the disease-free equilibrium and the endemic equilibrium are found and their stability is discussed. The basic reproduction number , which is a function of the constant parameters in the model, plays an essential role in the stability of the ...
In this paper, an SIR epidemic model with an infectious period and a non-linear Beddington-DeAngelis type incidence rate function is considered. The dynamics of this model depend on the reproduction number R0. Accurately, if R0 < 1, we show the global asymptotic stability of the disease-free equilibrium by analyzing the corresponding characteristic equation and using compa...
ductor devices. A self consistent Schrodinger – Poisson solver allows calculation of bound state energies and associated carrier wave functions self consistently with electrostatic potential. Schrodinger solvers can be combined with Non-equilibrium Green’s Function (NEGF) Approach in order to model ballistic quantum transport in 2D or cylindrical devices with strong transverse confinement. An a...
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