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Evolution of the 4f electron localization from YbRh2Si2 to YbRh2Pb studied by electron spin resonance |
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| Authors: | V A Ivanshin T O Litvinova N A Ivanshin A Pöppl D A Sokolov M C Aronson |
| Institution: | 1. MRS Laboratory, Kazan Federal (Volga Region) University, Kazan, 420008, Russia 3. Faculty of Physics and Earth Sciences, University of Leipzig, Leipzig, D-04103, Germany 2. Kazan State University of Architecture and Engineering, Kazan, 420043, Russia 4. School on Physics and CSEC, University of Edinburgh, Edinburgh, EH 3JZ, UK 5. Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY, 11794-3800, USA 6. Condensed Matter Physics and Materials Department, Brookhaven National Laboratory, Upton, NY, 11973-5000, USA |
| Abstract: | We report on electron spin resonance (ESR) experiments on the Heusler alloy YbRh2Pb and compare its spin dynamics with that of several other Yb-based intermetallics. A detailed analysis of the derived ESR parameters indicates the extremely weak hybridization, more localized distribution of the 4f states, and a smaller RKKY interaction in YbRh2Pb. These findings reveal the important interplay between hybridization effects, chemical substitution, and crystalline electric field interactions that determines the ground state properties of strongly correlated electron systems. |
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