论文标题
散发性重点材料的近野分解过渡和相分离趋势
Kondo breakdown transitions and phase-separation tendencies in valence-fluctuating heavy-fermion materials
论文作者
论文摘要
局部矩金属中晶格围绕效应的崩溃会导致量子关键的非平凡形式和多种非弗米液相。鉴于据迹象表明，不仅在旋转中，而且在电荷领域都涉及关键性，我们研究了广义的安德森晶格模型中的近托崩溃和强烈价波动的相互作用。我们采用parton平均场理论来描述脱合分离的费米液体与各种狭窄相之间的过渡。我们发现，近托崩溃附近的快速价变化可以使量子过渡一阶。这导致了相分离趋势，在包括长期库仑相互作用后，将在昆多破裂过渡附近产生本质上不均匀的状态。我们将发现与实验数据的未解决方面联系起来。
The breakdown of the lattice Kondo effect in local-moment metals can lead to non-trivial forms of quantum criticality and a variety of non-Fermi-liquid phases. Given indications that Kondo-breakdown transitions involve criticality not only in the spin but also in the charge sector, we investigate the interplay of Kondo breakdown and strong valence fluctuations in generalized Anderson lattice models. We employ a parton mean-field theory to describe the transitions between deconfined fractionalized Fermi liquids and various confined phases. We find that rapid valence changes near Kondo breakdown can render the quantum transition first order. This leads to phase-separation tendencies which, upon inclusion of longer-range Coulomb interactions, will produce intrinsically inhomogeneous states near Kondo-breakdown transitions. We connect our findings to unsolved aspects of experimental data.
