论文标题
熵和无限维三轨模型的特异性热
Entropy and specific heat of the infinite-dimensional three-orbital Hubbard model
论文作者
论文摘要
多型哈伯德系统中的Hund耦合引起旋转冷冻和相关的hund金属行为。使用动态平均场理论，我们探讨了局部矩形成，自旋和电荷激发对三轨模型的熵和比热的影响。特别是，我们证明了在低温下自旋冻结金属相中的熵的大幅增强，以及与高温下自旋和电荷波动激活相关的比热的峰值。我们还阐明了这些温度尺度如何取决于相互作用参数和填充。
The Hund coupling in multiorbital Hubbard systems induces spin freezing and associated Hund metal behavior. Using dynamical mean field theory, we explore the effect of local moment formation, spin and charge excitations on the entropy and specific heat of the three-orbital model. In particular, we demonstrate a substantial enhancement of the entropy in the spin-frozen metal phase at low temperatures, and peaks in the specific heat associated with the activation of spin and charge fluctuations at high temperature. We also clarify how these temperature scales depend on the interaction parameters and filling.
