Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Published Version
Publication Date
9-15-2012
Journal or Book Title
Physical Review B
Volume
86
Issue
11
First Page
115110
DOI
10.1103/PhysRevB.86.115110
Abstract
The thermoelectric power, S(T), of the heavy fermions YbT2Zn20 (T = 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 S(T) with approximately −70 μV/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 S(T)/T value is observed for all members, although S(T) does show a deviation from a purely linear temperature dependence, S(T) = αT, for T ≠ Fe members. In the zero-temperature limit, estimated by a simple linear extrapolation, the enhanced S(T)/T value strongly correlates with the electronic specific heat coefficient, C(T)/T.
Copyright Owner
American Physical Society
Copyright Date
2012
Language
en
File Format
application/pdf
Recommended Citation
Mun, E. D.; Jia, S.; Bud’ko, Sergey L.; and Canfield, Paul C., "Thermoelectric power of the YbT2Zn20 (T = Fe, Ru, Os, Ir, Rh, and Co) heavy fermions" (2012). Physics and Astronomy Publications. 655.
https://lib.dr.iastate.edu/physastro_pubs/655
Comments
This article is published as Mun, E. D., S. Jia, S. L. Bud'Ko, and P. C. Canfield. "Thermoelectric power of the Yb T 2 Zn 20 (T= Fe, Ru, Os, Ir, Rh, and Co) heavy fermions." Physical Review B 86, no. 11 (2012): 115110. DOI: 10.1103/PhysRevB.86.115110. Posted with permission.