Abstract
The thermoelectric power, , of the heavy fermions YbZn ( Fe, Ru, Os, Ir, Rh, and Co) has been measured to shed further light on their strong electronic correlations. A large, negative, local minimum in with approximately V/K is found for all compounds. From the observed local minimum, the energy scales associated with both the Kondo temperature and the crystalline electric field splitting are deduced and compared to previous specific heat measurements. At low temperatures, a highly enhanced value is observed for all members, although does show a deviation from a purely linear temperature dependence, , for Fe members. In the zero-temperature limit, estimated by a simple linear extrapolation, the enhanced value strongly correlates with the electronic specific heat coefficient, .
- Received 22 July 2010
DOI:https://doi.org/10.1103/PhysRevB.86.115110
©2012 American Physical Society