Ambipolar bistable switching effect of graphene

Unipolar to ambipolar conversion in graphene field-effect transistors

the effect analysis of proficiency on language - switching in iranian efl learners writing

abstract in a protocol analysis of second language writing from 20 adult english as a foreign language (efl) iranian students, this research observed how language-switching (l-s), i.e., first language use in l2 writing, was affected by l2 proficiency. switching interactively between first (l1) and second (l2) languages has been recognized as one of the salient characteristics of l2 writing....

Optimal bistable switching in nonlinear photonic crystals.

We present an analytical model and numerical experiments to describe optimal bistable switching in a nonlinear photonic crystal system. It is proved that only three parameters are needed to characterize a bistable switch: the resonant frequency omega(res), the quality factor Q, and parameter kappa that measures nonlinear "feedback strength." A photonic crystal enables the device to operate in s...

Distribution of supercurrent switching in graphene under the proximity effect.

We study the stochastic nature of switching current in hysteretic current-voltage characteristics of superconductor-graphene-superconductor junctions. We find that the dispersion of the switching current distribution scales with temperature as σ(I) proportional to T(α(G)) with α(G) as low as 1/3. This observation is in sharp contrast to the known Josephson junction behavior where σ(I) proportio...

Magnetic field driven ambipolar quantum Hall effect in epitaxial graphene close to the charge neutrality point

A. Nachawaty,1,2 M. Yang,3 W. Desrat,1 S. Nanot,1 B. Jabakhanji,4 D. Kazazis,5,6 R. Yakimova,7 A. Cresti,8 W. Escoffier,3 and B. Jouault1 1Laboratoire Charles Coulomb (L2C), UMR 5221 CNRS-Université de Montpellier, F-Montpellier, France 2Laboratoire de Physique et Modélisation (LPM), EDST, Lebanese University, Tripoli, Lebanon 3Laboratoire National des Champs Magnétiques Intenses (LNCMI-EMFL), ...