2004/08/12 by H. Wilhelm, D. Jaccard, V. Zlatic +4
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1088/0953-8984/17/11/012
published as J. Phys.: Condens. Matter 17 (2005) S823-S836 · 9 pages, 10 figures
arxiv created 2004/08/12 · openalex publication_date 2005/03/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The pressure-induced changes in the temperature-dependent thermopower S ( T ) and electrical resistivity ρ( T ) of CeRu 2 Ge 2 are described within the single-site Anderson model. The Ce ions are treated as impurities and the coherent scattering on different Ce sites is neglected. Changing the hybridization Γ between the 4f states and the conduction band accounts for the pressure effect. The transport coefficients are calculated in the non-crossing approximation above the phase boundary line. The theoretical S ( T ) and ρ( T ) curves show many features of the experimental data. The seemingly complicated temperature dependence of S ( T ) and ρ( T ), and their evolution as a function of pressure, is related to the crossovers between various fixed points of the model.