论文标题

X-Boson方法中压力引起的超导体 - 绝缘体转变

Superconductor-insulator transition induced by pressure within the X-boson approach

论文作者

Nunes, Lizardo H. C. M., Figueira, M. S., de Mello, E. V. L.

论文摘要

考虑到$ u = \ infty $限制的周期性安德森模型(PAM)的延伸,计算了压力诱导的超导相图,这些阶段是考虑到F-Electrons之间最近邻居相互作用的效果。我们分析了化学电位的作用,与状态的F波段密度的几个图相比,我们还发现当化学势越过杂交间隙时,由压力引起的超导体 - 绝缘体转变。

The pressure induced superconducting phase diagram is calculated for an extension of the periodic Anderson model (PAM) in the $ U = \infty $ limit taking into account the effect of a nearest neighbor attractive interaction between f-electrons. We analyze the role of the chemical potential compared to several plots of the f-band density of states and we also found a superconductor-insulator transition induced by pressure when the chemical potential crosses the hybridization gap.

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