Abstract
We investigate the electron-spin-resonance (ESR) phenomenon in the heavy-fermion metal by applying hydrostatic pressure up to 3 GPa and by inducing the internal pressure on the Yb site chemically in samples. We found that the increase in pressure, reducing the hybridization between and conduction electrons, leads to a remarkable change in the temperature dependence of the factor and broadens the ESR line. We relate the differences between the effect of internal and external pressure on the low-temperature ESR parameters to the disorder induced by Co doping. The pressure effects on the -related resonance in again manifest its local character when compared with the resonance of diluted Gd in heavy-fermion metals.
- Received 18 March 2010
DOI:https://doi.org/10.1103/PhysRevB.81.205116
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