2008/04/21 by Jian-Xin Zhu, Jian‐Xin Zhu, Ivar Martin +2 · 14 citations
Materials Science · Physics and Astronomy · #Anderson impurity model #Antiferromagnetism #Charge (physics) #Condensed matter physics #Coupling (piping) #Electron #Fermi liquid theory #Fermion #Iron-based superconductors research #Kondo effect #Kondo insulator #Kondo model #Materials science #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Rare-earth and actinide compounds #Spin (aerodynamics) #Spinon #Strongly correlated material #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.100.236403
published in Physical Review Letters 100(23), 236403 (American Physical Society) · 4+ pages, 5 figures
arxiv created 2008/04/21 · openalex publication_date 2008/06/12 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the interplay between the spin-liquid and Kondo physics, as related to the nonmagnetic part of the phase diagram of heavy fermion materials. Within the unrestricted mean-field treatment of the infinite-U 2D Anderson-Heisenberg model, we find that there are two topologically distinct nondegenerate uniform heavy Fermi liquid states that may form as a consequence of the Kondo coupling between spinons and conduction electrons. For certain carrier concentrations, the uniform Fermi liquid becomes unstable with respect to the formation of a new kind of anharmonic "Kondo stripe" state with inhomogeneous Kondo screening strength and the charge density modulation. These features are experimentally measurable and thus may help to establish the relevance of the spin-liquid correlations to heavy fermion materials.