论文标题
Bose-Einstein凝结物介导的石墨烯中的超导性
Bose-Einstein condensate-mediated superconductivity in graphene
论文作者
论文摘要
我们提出了一种在放置在玻色子凝结物附近的石墨烯中的稳健BCS样超导性的机制。石墨烯中的电子与凝结物上方的激发相互作用，称为bogoliubov准粒（或bogolons）。事实证明，Bogolon-Pair介导的相互作用使我们能够超越线性光谱的颗粒状态消失密度的长期问题。这导致了石墨烯的超导性能的显着增强，同时保持其相对论分散体。我们研究了超导间隙的行为，并在单烟石和波哥龙对介导的配对过程的情况下计算临界温度，这构成了石墨烯的复杂带结构。我们还比较了超导过渡的临界温度与BKT温度。
We propose a mechanism for robust BCS-like superconductivity in graphene placed in the vicinity of a Bose-Einstein condensate. Electrons in the graphene interact with the excitations above the condensate, called Bogoliubov quasiparticles (or bogolons). It turns out that bogolon-pair-mediated interaction allows us to surpass the long-standing problem of the vanishing density of states of particles with a linear spectrum. This results in a dramatic enhancement of the superconducting properties of graphene while keeping its relativistic dispersion. We study the behavior of the superconducting gap and calculate critical temperatures in cases with single-bogolon and bogolon-pair-mediated pairing processes, accounting for the complex band structure of graphene. We also compare the critical temperature of the superconducting transition with the BKT temperature.
