Effect of pressure on the electron spin resonance of a heavy-fermion metal
Effect of pressure on the electron spin resonance of a heavy-fermion metal
We investigate the electron-spin-resonance (ESR) phenomenon in the heavy-fermion metal ${\text{YbRh}}_{2}{\text{Si}}_{2}$ by applying hydrostatic pressure up to 3 GPa and by inducing the internal pressure on the Yb site chemically in $\text{Yb}{({\text{Rh}}_{1\ensuremath{-}x}{\text{Co}}_{x})}_{2}{\text{Si}}_{2}$ samples. We found that the increase in pressure, reducing the hybridization between $4f$ and conduction electrons, leads to …