2008/04/30 by Lorenzo De Leo, Marcello Civelli, Gabriel Kotliar · 1 citation
Materials Science · Physics and Astronomy · #Condensed matter physics #Cuprate #Electron #Iron-based superconductors research #Phase transition #Physics #Physics of Superconductivity and Magnetism #Pseudogap #Quantum mechanics #Rare-earth and actinide compounds #Strongly correlated material #Superconductivity #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.101.256404
published as Phys. Rev. Lett. 101, 256404 (2008) · 4 pages, 3 figures. Published version
openalex publication_date 2008/12/19 · arxiv created 2009/01/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We describe the T=0 quantum phase transition in heavy-fermion systems as an orbital-selective Mott transition (OSMT) using a cluster extension of dynamical mean-field theory. This transition is characterized by the emergence of a new intermediate energy scale corresponding to the opening of a pseudogap and the vanishing of the low-energy hybridization between light and heavy electrons. We identify the fingerprint of Mott physics in heavy electron systems with the appearance of surfaces in momentum space where the self-energy diverges and we derive experimental consequences of this scenario for photoemission, compressibility, optical conductivity, susceptibility, and specific heat.