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arXiv · 1010.5111

Thermoelectric power of Ba(Fe1-xRux)2As2 and Ba(Fe1-xCox)2As2: possible changes of Fermi surface with and without changes in electron count

H. Hodovanets·E. D. Mun·A. Thaler·S. L. Bud'ko·P. C. Canfield
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Abstract

Temperature-dependent, in-plane, thermoelectric power (TEP) data are presented for Ba(Fe1-xRux)2As2 (0 < x < 0.36) single crystals. The previously outlined x - T phase diagram for this system is confirmed. The analysis of TEP evolution with Ru-doping suggests significant changes in the electronic structure, correlations and/or scattering occurring near ~7% and ~30% of Ru-doping levels. These results are compared with an extended set of TEP data for the electron-doped Ba(Fe1-xCox)2As2 series.

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H. Hodovanets, E. D. Mun, A. Thaler, S. L. Bud'ko, P. C. Canfield. 2010-10-25. Thermoelectric power of Ba(Fe1-xRux)2As2 and Ba(Fe1-xCox)2As2: possible changes of Fermi surface with and without changes in electron count. https://doi.org/10.1103/physrevb.83.094508

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