We have observed indications of possible superconductivity in phosphorus-doped graphene. In the past we focused on resistivity and susceptibility measurements in our doped graphene samples. There are also magnetic-induced phenomena in phosphorus-doped multilayer graphene that are consistent with effects observed in type II multilayer superconductors. Such effects include Nernst peaks in the presence of magnetic fields, vortex and charge BKT transitions as well as well-defined hysteresis curves in the cooling and warming Nernst plots. In this work, we present the results of our experiments and provide explanations of the role of vortices as well as vortex-antivortex dissociation as the cause of the hysteresis found in the Nernst plots.

我们已经观察到在掺磷石墨烯中可能存在超导的迹象。过去，我们专注于掺杂石墨烯样品的电阻率和磁化率测量。在磷掺杂的多层石墨烯中也有磁感应现象，与在II型多层超导体中观察到的效应一致。这样的影响包括在磁场，涡旋和电荷BKT跃迁存在下的能斯特峰，以及在冷却和升温能斯特曲线中明确定义的磁滞曲线。在这项工作中，我们介绍了我们的实验结果，并解释了涡旋以及涡旋-反涡旋解离作为能斯特曲线滞后原因的作用。