论文标题
库酸酯超导体中的等离子体激发的仔细检查
Close inspection of plasmon excitations in cuprate superconductors
论文作者
论文摘要
最近，共振的无弹性X射线散射实验报告了平面动量$ {\ bf q} _ {\ parleallal} =（0,0）$的充电激励细节，用于电子掺杂率的各种掺杂率，电子掺杂率，我们发现，这些新的实验数据在与远程库仑相互作用的分层$ t $ -J $模型的微观研究中被类似原声的等离子体激发所捕获。像二维系统的原声等离子体不是常见的等离子体，但与$ t_z $的层间差距成正比。
Recently resonant inelastic x-ray scattering experiments reported fine details of the charge excitations around the in-plane momentum ${\bf q}_{\parallel}=(0,0)$ for various doping rates in electron-doped cuprates ${\rm La_{2-x}Ce_xCuO_4}$. We find that those new experimental data are well captured by acoustic-like plasmon excitations in a microscopic study of the layered $t$-$J$ model with the long-range Coulomb interaction. The acoustic-like plasmon is not a usual plasmon typical to the two-dimensional system, but has a small gap proportional to the interlayer hopping $t_z$.
