Enhanced thermoelectric power and electronic correlations in RuSe2
Year: 2015
Type: article
Abstract: We report the electronic structure, electric and thermal transport properties of Ru1−xIrxSe2 (x ≤ 0.2). RuSe2 is a semiconductor that crystallizes in a cubic pyrite unit cell. The Seebeck coefficient of RuSe2 exceeds −200 μV/K around 730 K. Ir substitution results in the suppression of the resistivity and the Seebeck coefficient, suggesting the removal of the peaks in density of states near the Fermi level. Ru0.8Ir0.2Se2 shows a semiconductor-metal crossover at about 30 K. The magnetic field restores the semiconducting behavior. Our results indicate the importance of the electronic correlations in enhanced thermoelectricity of RuSb2.
Source: APL Materials
DOI: 10.1063/1.4913919
Authors: Kefeng Wang, Aifeng Wang, A. Tomic, Limin Wang, A. M. Milinda Abeykoon, E. Dooryhee, S. J. L. Billinge, C. Petrovic
Institutions: Brookhaven National Laboratory, Columbia University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,200
OpenAlex ID: W2076364798