Details

Autor(en) / Beteiligte

• Wang, Kefeng
• Wang, Aifeng
• Tomic, A.
• Wang, Limin
• Abeykoon, A. M. Milinda
• Dooryhee, E.
• Billinge, S. J. L.
• Petrovic, C.

Titel

Enhanced thermoelectric power and electronic correlations in RuSe2

Ist Teil von

• APL materials, 2015-04, Vol.3 (4), p.041513-041513-7

Ort / Verlag

United States: American Institute of Physics (AIP)

Erscheinungsjahr

2015

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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.