2005/11/24 by N. E. Sluchanko, A. V. Bogach, Sluchanko, N E +13
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Metallurgical and Alloy Processes #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.cond-mat/0511600
openalex publication_date 2005/11/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The work presents experimental results of precision magnetoresistance dr(H,T) measurements obtained for canonical heavy fermion compounds CeAl2, CeAl3, CeCu6 and substitutional solid solutions CeCu6-xAux (x=0.1 and 0.2) and Ce(Al0.95M0.05)2 (M - Co, Ni). The research was performed in a wide range of temperatures (1.8-30K) and magnetic fields (up to 80 kOe). The data analysis indicates that the most consistent interpretation of magnetoresistance of both paramagnetic and magnetically ordered Ce-based systems with strong electron correlations can be obtained through the approach developed by K.Yosida (Phys.Rev., 107, 396(1957)) that considers charge carrier scattering on localized magnetic moments in metallic matrix. Within this approach local magnetic susceptibility hiloc(H,T0)=(1/H d(dr/r)/dH)1/2 has been estimated directly from the magnetoresistance data dr/r=f(H,T0). As a result, two additional contributions to magnetoresistance in Ce-based magnetic intermetallides have been established and classified. The procedure allowed to determine the peculiarities of magnetic phase ht diagram as well as to reveal the electron density of states renormalization effects in a wide vicinity of quantum critical point in the archetypal Ce-based systems with strong electron correlations.