Universal Spin Diffusion Length in Polycrystalline Graphene
نویسندگان
چکیده
منابع مشابه
Penetration and lateral diffusion characteristics of polycrystalline graphene barriers.
We report penetration and lateral diffusion behavior of environmental molecules on synthesized polycrystalline graphene. Penetration occurs through graphene grain boundaries resulting in local oxidation. However, when the penetrated molecules diffuse laterally, the oxidation region will expand. Therefore, we measured the lateral diffusion rate along the graphene-copper interface for the first t...
متن کاملUniversal quantized spin-Hall conductance fluctuation in graphene.
We report theoretical investigations of the quantized spin-Hall conductance fluctuation of graphene in the presence of disorder. Two graphene models that exhibit the quantized spin-Hall effect (QSHE) are analyzed. Model I is with unitary symmetry under an external magnetic field B not = 0 but with a zero spin-orbit interaction, t(SO)=0. Model II is with symplectic symmetry where B=0 but t(SO) n...
متن کاملElectronic transport in polycrystalline graphene.
Most materials in available macroscopic quantities are polycrystalline. Graphene, a recently discovered two-dimensional form of carbon with strong potential for replacing silicon in future electronics, is no exception. There is growing evidence of the polycrystalline nature of graphene samples obtained using various techniques. Grain boundaries, intrinsic topological defects of polycrystalline ...
متن کاملPolycrystalline graphene ribbons as chemiresistors.
A IO N Graphene is a two-dimensional semimetal with zero band gap that exhibits excellent electrical, mechanical and thermal properties.[1,2] Transport through delocalized pi bonds allows charge carriers in graphene to achieve high mobility[3,4] for both electrons and holes, over ∼105 cm2/V·s for freely suspended graphene and >104 cm2/V·s for graphene on SiO2. Recent studies have suggested that...
متن کاملSpin currents in rough graphene nanoribbons: universal fluctuations and spin injection.
We investigate spin conductance in zigzag graphene nanoribbons and propose a spin injection mechanism based only on graphitic nanostructures. We find that nanoribbons with atomically straight, symmetric edges show zero spin conductance but nonzero spin Hall conductance. Only nanoribbons with asymmetrically shaped edges give rise to a finite spin conductance and can be used for spin injection in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nano Letters
سال: 2019
ISSN: 1530-6984,1530-6992
DOI: 10.1021/acs.nanolett.9b03112