Correlated evolution of colossal thermoelectric effect and Kondo insulating behavior

M. K. Fuccillo; Q. D. Gibson; Mazhar N. Ali; L. M. Schoop; R. J. Cava

doi:10.1063/1.4833055

Correlated evolution of colossal thermoelectric effect and Kondo insulating behavior

M. K. Fuccillo, Q. D. Gibson, Mazhar N. Ali, L. M. Schoop, R. J. Cava

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We report the magnetic and transport properties of the Ru _1-xFe_xSb₂ 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.

Original language	English (US)
Article number	062102
Journal	APL Materials
Volume	1
Issue number	6
DOIs	https://doi.org/10.1063/1.4833055
State	Published - Dec 2013

All Science Journal Classification (ASJC) codes

General Materials Science
General Engineering

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10.1063/1.4833055

Cite this

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title = "Correlated evolution of colossal thermoelectric effect and Kondo insulating behavior",

abstract = "We report the magnetic and transport properties of the Ru 1-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.",

author = "Fuccillo, {M. K.} and Gibson, {Q. D.} and Ali, {Mazhar N.} and Schoop, {L. M.} and Cava, {R. J.}",

note = "Funding Information: This research was supported by the Air Force MURI on thermoelectric materials, Grant No. FA9550-10-1-0553. Y. S. Hor designed the modified Seebeck measurement device and J. B. Webb helped us develop the methods used to grow crystals for this study. ",

year = "2013",

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doi = "10.1063/1.4833055",

language = "English (US)",

volume = "1",

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AU - Fuccillo, M. K.

AU - Gibson, Q. D.

AU - Ali, Mazhar N.

AU - Schoop, L. M.

AU - Cava, R. J.

N1 - Funding Information: This research was supported by the Air Force MURI on thermoelectric materials, Grant No. FA9550-10-1-0553. Y. S. Hor designed the modified Seebeck measurement device and J. B. Webb helped us develop the methods used to grow crystals for this study.

PY - 2013/12

Y1 - 2013/12

N2 - We report the magnetic and transport properties of the Ru 1-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.

AB - We report the magnetic and transport properties of the Ru 1-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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Correlated evolution of colossal thermoelectric effect and Kondo insulating behavior

Abstract

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