We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Thermoelectric and Galvanomagnetic Properties of Layered n-Bi<sub>2 –</sub><sub>x</sub>Sb<sub>x</sub>Te<sub>3 –</sub><sub>y</sub>Se<sub>y</sub> Films.
- Authors
Lukyanova, L. N.; Usov, O. A.; Volkov, M. P.
- Abstract
The thermoelectric properties in the temperature range 4.2–300 K and magnetoresistance oscillations in strong magnetic fields at low temperatures are studied in nanostructured layered films of topological thermoelectric materials n-Bi2 –xSbxTe3 –ySey. It is shown that the thermoelectric figure of merit in layered n-Bi2 –xSbxTe3 –ySey films is larger than that in the bulk material due both to an increase in the Seebeck coefficient below room temperature and to a decrease in the thermal conductivity and its weaker temperature dependence. Analysis of the magnetoresistance oscillations is used to determine the parameters of the topological surface states of Dirac fermions and estimate their influence on the thermoelectric properties.
- Subjects
FERROELECTRIC thin films; SEMIMETALS; THERMOELECTRIC materials; SEEBECK coefficient; BULK solids; MAGNETIC fields; THERMAL conductivity
- Publication
Semiconductors, 2019, Vol 53, Issue 5, p620
- ISSN
1063-7826
- Publication type
Academic Journal
- DOI
10.1134/S1063782619050154