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arXiv 1404.6136cond-mat.mes-hall
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石墨烯波导间等离子体介导的库仑阻力

Plasmon-mediated Coulomb drag between graphene waveguides

Artsem A. Shylau, Antti-Pekka Jauho

摘要:

从理论上分析了库仑耦合石墨烯波导中的电荷输运。GWG使用反点晶格定义,并且横向几何形状绕过了早期设计的许多技术挑战。拖曳电阻率$ρ_D$,这是一个衡量的GWG之间的多粒子相互作用,计算的温度和波导分离的范围。它表明,对于$T>0.1T_F$的阻力显着增强,由于等离子体激元,并在低温制度可能会发生一个复杂的行为。在弱耦合区,阻力对波导间距$d$的依赖关系为$ρ_D \sim d^{-n}$,其中$n \simeq 6$。

英文摘要:

We analyze theoretically charge transport in Coulomb coupled graphene waveguides (GWGs). The GWGs are defined using antidot lattices, and the lateral geometry bypasses many technological challenges of earlier designs. The drag resistivity $ρ_D$, which is a measure of the many-particle interactions between the GWGs, is computed for a range of temperatures and waveguide separations. It is demonstrated that for $T>0.1T_F$ the drag is significantly enhanced due to plasmons, and that in the low-temperature regime a complicated behavior may occur. In the weak coupling regime the dependence of drag on the interwaveguide separation $d$ follows $ρ_D \sim d^{-n}$, where $n \simeq 6$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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