Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2009-08-25
Phys. Status solidi B 247, No.3, 747-750 (2010)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 6 figures; Manuscript for Proceedings of the International Conference on Quantum Criticality and Novel Phases (QCNP09
Scientific paper
10.1002/pssb.200983058
We present the field and temperature behavior of the narrow Electron Spin Resonance (ESR) response in YbRh2Si2 well below the single ion Kondo temperature. The ESR g factor reflects a Kondo-like field and temperature evolution of the Yb3+ magnetism. Measurements towards low temperatures (>0.5K) have shown distinct crossover anomalies of the ESR parameters upon approaching the regime of a well defined heavy Fermi liquid. Comparison with the field dependence of specific heat and electrical resistivity reveal that the ESR parameters can be related to quasiparticle mass and cross section and, hence, contain inherent heavy electron properties.
Belov Sergey
Fazlishanov I. I.
Geibel Ch.
Kambe Takashi
Kochelaev B. I.
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