发表机构
Arizona State University; Technische Universität Dresden（亚利桑那州立大学; 德累斯顿工业大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对重费米子材料中观测到的空间调制屏蔽现象，提出部分子平均场理论，证明在Kondo击穿量子相变附近重费米液体可自发产生杂化波，其周期由连接Dirac自旋子节点与电子低能带的动量决定。
AI 中文摘要
受近期在不同顺磁重费米子材料中观测到空间调制屏蔽现象的启发，我们提出了一种理论机制，用以解释在无磁序的受挫Kondo晶格中此类杂化波的出现。通过将部分子平均场理论与微扰计算应用于一个最小Kondo-Heisenberg晶格模型，我们证明了重费米液体在接近Kondo屏蔽击穿且局域磁矩形成Dirac自旋液体的量子相变时，能够自然地发展出杂化波。我们将该机制的强度与电子和自旋子能带结构上的一个运动学条件相关联，并表明杂化波的空间周期性由动量$\vec{Q}$决定，该动量将Dirac自旋子色散中的节点与电子能带结构的低能部分连接起来。
英文摘要
Motivated by the recent observation of spatially modulated screening in different paramagnetic heavy-fermion materials, we propose a theoretical mechanism for the emergence of such hybridization waves in frustrated Kondo lattices with no magnetic order. By applying a parton mean-field theory and a perturbative calculation to a minimal Kondo-Heisenberg lattice model, we demonstrate that a heavy Fermi liquid can naturally develop hybridization waves when it approaches a quantum phase transition where Kondo screening breaks down and the local magnetic moments form a Dirac spin liquid. We relate the strength of this mechanism to a kinematic condition on the electronic and spinon band structures and show that the spatial periodicity of the hybridization wave is set by a momentum $\vec{Q}$ connecting the nodes in the dispersion of the Dirac spinons to low-energy portions of the electronic band structure.
Comments8+8 pages, 4+4 figures
