论文标题
石墨烯科比诺设备中的流体动力磁力
Hydrodynamic magnetoresistance in graphene Corbino devices
论文作者
论文摘要
我们研究石墨烯设备中的流体动力电子磁通电流。我们表明，在这些系统中，出现了一种独特的磁化机制，在使用Galilean-Invariant Electron液体的系统中不存在。所得的磁化力取决于电子液体的固有电导率和粘度，并且在电荷中性近处尤为明显。我们获得了Corbino设备的磁托管系数的分析表达式，并获得了电荷中立的单层和双层系统的电和热磁磁盘的估计。在相对较弱的磁场上，磁极敏感变得强（100％），在这种场上，电子液体的动力系数实际上不受磁场的影响。
We study hydrodynamic electron magnetotransport in graphene devices. We show that in these systems a distinct mechanism of magnetoresistance appears, which is absent in systems with Galilean-invariant electron liquid. The resulting magnetoresistance depends on the intrinsic conductivity and viscosity of the electron liquid, and becomes especially pronounced near charge neutrality. We obtain analytic expressions for magnetoransport coefficients of Corbino devices, and obtain estimates for the electrical and thermal magnetoresistances for monolayer and bilayer systems at charge neutrality. Magnetoresistance becomes strong (of order 100%) at relatively weak fields, at which the kinetic coefficients of the electron liquid are practically unaffected by the magnetic field.
