Results 81 to 90 of about 748,632 (287)
Twist Gating of a Graphene Nanoribbon
Advanced Electronic Materials, EarlyView.It is shown that twisting of a hexa‐peri‐hexabenzocoronene nanoflake on an armchair graphene nanoribbon can modulate the current through the nanoribbon by 25% due to modulated scattering as a consequence of changes in the orbital overlap. Abstract Employing first‐principles calculations and the non‐equilibrium Green's function method, a hexa‐peri ...
Shubham Tyagi +2 more
wiley +1 more source
The dynamics of the relativistic Kepler problem
Results in Physics, 2020 We deal with the Hamiltonian system (HS) associated to the Hamiltonian in polar coordinates H=12pr2+pϕ2r2-1r-∊2r2, where ∊ is a small parameter. This Hamiltonain comes from the correction given by the special relativity to the motion of the two-body ...
Elbaz I. Abouelmagd +2 more
doaj
On periodic differential equations with dissipation
Electronic Journal of Qualitative Theory of Differential Equations, 2018 In this work we present an unexpected relation between the discriminant associated to a Hill equation with and without dissipation. We prove that by knowing the discriminant associated to a periodic differential equation, which is the summation of the ...
Carlos Franco, Joaquin Collado
doaj +1 more source
Advanced Electronic Materials, EarlyView.In compositional gradient materials, variations in electrical conductivity through the film thickness create a gradient in the electric current, resulting in vorticity. This vorticity acts like a magnetic field, whose gradient drives the generation of spin current.
Hayato Nakayama +8 more
wiley +1 more source
Noise Spectroscopy and Electrical Transport In NbO2 Memristors with Dual Resistive Switching
Advanced Electronic Materials, EarlyView.Electrical properties of NbO2‐based memristors are studied and the ability to engineer them for computing applications is explored. By employing noise spectroscopy and by utilizing a dimerization model of insulators, negative differential resistance and inhomogeneous conduction regions are explained.
Nitin Kumar +4 more
wiley +1 more source
Homoclinic solutions for second order Hamiltonian systems with general potentials near the origin
Electronic Journal of Qualitative Theory of Differential Equations, 2013 In this paper, we study the existence of infinitely many homoclinic solutions for a class of second order Hamiltonian systems with general potentials near the origin. Recent results from the literature are generalized and significantly improved.
Qingye Zhang
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Helmholtz theorem for stochastic Hamiltonian systems [PDF]
arXiv, 2015 We derive the Helmholtz theorem for stochastic Hamiltonian systems. Precisely, we give a theorem characterizing Stratonovich stochastic differential equations, admitting a Hamiltonian formulation. Moreover, in the affirmative case, we give the associated Hamiltonian.
arxiv
Screening and Development of Sacrificial Cathode Additives for Lithium‐Ion Batteries
Advanced Energy Materials, EarlyView.This work presents a computational screening approach to identify Li‐rich transition‐metal oxide sacrificial cathode additives and provides experimental validation of antifluorite‐structured Li6MnO4 as a potential candidate. Abstract This work presents a computational screening approach to identify Li‐rich transition‐metal oxide sacrificial cathode ...
Haegyeom Kim +15 more
wiley +1 more source
Gauge linked time-dependent non-Hermitian Hamiltonians [PDF]
arXiv, 2017 In this work we address systems described by time-dependent non-Hermitian Hamiltonians under time-dependent Dyson maps. We shown that when starting from a given time-dependent non-Hermitian Hamiltonian which is not itself an observable, an infinite chain of gauge linked time-dependent non-observable non-Hermitian Hamiltonians can be derived from it ...
arxiv
Hamiltonian Systems and Transformation in Hilbert Space [PDF]
, 1931 B. O. Koopman
openalex +1 more source