Title
Thermoelectric power of Ba(Fe1-x Co (x) )(2)As-2 (0x0.05) and Ba(Fe1-x Rh (x) )(2)As-2 (0x0.171)
Campus Units
Physics and Astronomy, Ames Laboratory
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
2-1-2013
Journal or Book Title
Philosophical Magazine
Volume
93
Issue
6
First Page
661
Last Page
672
DOI
10.1080/14786435.2012.729866
Abstract
Temperature-dependent, in-plane, thermoelectric power data are presented for single crystals of Ba(Fe1−x Co x )2As2 (0 ≤ x ≤ 0.05) and Ba(Fe1−x Rh x )2As2 (0 ≤ x ≤ 0.171). Given that previous thermoelectric power and angle resolved photoemission spectroscopy studies of Ba(Fe1−x Co x )2As2 delineated a rather large Co-concentration range for Lifshitz transitions to occur, and the underdoped side of the phase diagram is poorly explored, new measurements of thermoelectric power on tightly spaced concentrations of Co, 0 ≤ x ≤ 0.05, were carried out. The data suggest evidence of a Lifshitz transition, but instead of a discontinuous jump in thermoelectric power in the range 0 ≤ x ≤ 0.05, a more gradual evolution in the S(T) plots as x is increased was observed. The thermoelectric power data of Ba(Fe1−x Rh x )2As2 show very similar behavior to that of Co substituted BaFe2As2. The previously outlined T–x phase diagrams for both systems are further confirmed by these thermoelectric power data.
Copyright Owner
Taylor & Francis Group, LLC
Copyright Date
2013
Language
en
File Format
application/pdf
Recommended Citation
Hodovanets, Halyna M.; Thaler, Alex; Mun, Eundeok; Ni, Ni; Bud’ko, Sergey L.; and Canfield, Paul C., "Thermoelectric power of Ba(Fe1-x Co (x) )(2)As-2 (0x0.05) and Ba(Fe1-x Rh (x) )(2)As-2 (0x0.171)" (2013). Physics and Astronomy Publications. 634.
https://lib.dr.iastate.edu/physastro_pubs/634
Comments
This is an Accepted Manuscript of an article published by Taylor & Francis in Philosophical Magazine on February 1, 2013, available online http://www.tandfonline.com/10.1080/14786435.2012.729866. Posted with permission.