Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn)

Details Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn) Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn)

2011-10-17

arxiv.org/abs/1110.3607v2

Physics

Condensed Matter

Materials Science

PRB Accepted, 11 pages, 10 figures

Scientific paper

Recently, we reported [M. Wagner et al., J. Mater. Res. 26, 1886 (2011)] transport measurements on the semiconducting intermetallic system RuIn3 and its substitution derivatives RuIn_{3-x}A_{x} (A = Sn, Zn). Higher values of the thermoelectric figure of merit (zT = 0.45) compared to the parent compound were achieved by chemical substitution. Here, using density functional theory based calculations, we report on the microscopic picture behind the measured phenomenon. We show in detail that the electronic structure of the substitution variants of the intermetallic system RuIn_{3-x}A_{x} (A = Sn, Zn) changes in a rigid-band like fashion. This behavior makes possible the fine tuning of the substitution concentration to take advantage of the sharp peak-like features in the density of states of the semiconducting parent compound. Trends in the transport properties calculated using the semi-classical Boltzmann transport equations within the constant scattering time approximation are in good agreement with the former experimental results for RuIn_{3-x}Sn_{x}. Based on the calculated thermopower for the p-doped systems, we reinvestigated the Zn-substituted derivative and obtained ZnO-free RuIn_{3-x}Zn_{x}. The new experimental results are consistent with the calculated trend in thermopower and yield large zT value of 0.8.

Affiliated with

Also associated with

No associations

Rating

Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronic and Thermoelectric Properties of RuIn_{3-x}A_{x} (A = Sn, Zn) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-317454