论文标题
奇怪金属行为的简单模型
A simple model for strange metallic behavior
论文作者
论文摘要
最近提出了一种奇怪的金属行为，一种精致的半学性非Fermi液体模型与全息关键关键部门的运营商杂交。该模型与有效理论方法一致地具有两个与掺杂相关的耦合。我们解释了线性中的电阻率和奇怪的金属行为的起源，这是由于光谱函数的通用形式的出现，当两个耦合的比率仅由关键指数确定的最佳值时，光谱函数的出现与模型参数无关。这种通用形式与氧化铜样品的光发射数据非常吻合/在广泛温度范围内与固定指数的未量/最佳/过度兴奋剂。我们进一步获得了一种精致的普兰克耗散场景，其中散射时间$τ= f \ cdot \ hbar /（k_b t）$，$ f $ as $ \ natercal {o}（1）$在strong coupling处，但是$ \ nathcal {o}（o}（10）$，在弱coupling coupling。
A refined semi-holographic non-Fermi liquid model, in which carrier electrons hybridize with operators of a holographic critical sector, has been proposed recently for strange metallic behavior. The model, consistently with effective theory approach, has two couplings whose ratio is related to the doping. We explain the origin of the linear-in-T resistivity and strange metallic behavior as a consequence of the emergence of a universal form of the spectral function which is independent of the model parameters when the ratio of the two couplings take optimal values determined only by the critical exponent. This universal form fits well with photoemission data of copper oxide samples for under/optimal/over-doping with a fixed exponent over a wide range of temperatures. We further obtain a refined Planckian dissipation scenario in which the scattering time $τ= f \cdot \hbar /(k_B T)$, with $f$ being $\mathcal{O}(1)$ at strong coupling, but $\mathcal{O}(10)$ at weak coupling.
