Open AccessCorrelated evolution of colossal thermoelectric effect and Kondo insulating behavior
Author(s) -
M. K. Fuccillo,
Quinn Gibson,
Mazhar N. Ali,
Leslie M. Schoop,
R. J. Cava
Publication year - 2013
Publication title -
apl materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.571
H-Index - 60
ISSN - 2166-532X
DOI - 10.1063/1.4833055
Subject(s) - thermoelectric effect , materials science , thermoelectric materials , condensed matter physics , seebeck coefficient , character (mathematics) , engineering physics , thermodynamics , physics , geometry , mathematics
We report the magnetic and transport properties of the Ru1−xFexSb2 solid solution, showing how the colossal thermoelectric performance of FeSb2 evolves due to changes in the amount of 3d vs. 4d electron character. The physical property trends shed light on the physical picture underlying one of the best low-T thermoelectric power factors known to date. Some of the compositions warrant further study as possible n- and p-type thermoelements for Peltier cooling well below 300 K. Our findings enable us to suggest possible new Kondo insulating systems that might behave similarly to FeSb2 as advanced thermoelectrics
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