2010/05/31 by Adam Rançon-Schweiger, Adel Benlagra, C. Pépin +1
Chemistry · Physics and Astronomy · #Chemistry #Condensed matter physics #Criticality #Electron #Fermi energy #Fermi liquid theory #Heavy fermion #Nuclear physics #Operator (biology) #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum, superfluid, helium dynamics #Rare-earth and actinide compounds #Specific heat #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.83.073102
published as Phys. Rev. B 83, 073102 (2011) · 6 pages, 6 figures - replaced with the published version
openalex publication_date 2011/02/16 · arxiv created 2011/02/17 · arxiv updated 2011/02/18 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Recently, attention has been given to a system of 3He bilayers where a quantum criticality similar to the one in heavy-fermion compounds has been observed [Neumann et al., Science 317, 1356 (2007)]. In our previous analysis [Benlagra and P'epin, Phys. Rev. Lett. 79, 045112 (2007)], based on the Kondo breakdown scenario, we addressed successfully most of the features observed in that experiment. Here, we consider the activation energy \ensuremathΔ observed experimentally in the specific heat measurements at low temperatures in the heavy-Fermi-liquid phase. Within our previous study of this system, this is identified with the gap opening when the upper hybridized band is emptied due to a strong hybridization between the nearly localized first layer and the fluid second one. We discuss the successes and limitations of our approach. An additional prediction is proposed.