Reference : Effect of hydrostatic pressure on the thermoelectric properties of Bi2 Te3
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/182933
Effect of hydrostatic pressure on the thermoelectric properties of Bi2 Te3
English
Ibarra-Hernández, Wilfredo mailto [Départment de Physique, Université de Liège, Allée du 6 Août 17, Sart Tilman, Belgium]
Verstraete, Matthieu mailto [Université de Liège > Département de physique > Physique des matériaux et nanostructures >]
Raty, Jean-Yves mailto [Université de Liège > Département de physique > Physique expérimentale des matériaux nanostructurés >]
2014
Physical Review. B, Condensed Matter and Materials Physics
American Physical Society
90
24
245204
Yes (verified by ORBi)
International
1098-0121
1550-235X
USA
[en] Thermolectricity ; Chalcogenide ; high-pressure ; ab initio
[en] We use first-principles calculations to understand the behavior of the Seebeck coefficient (S) in Bi2Te3 as a function of isotropic pressure. We perform calculations up to 5 GPa using density functional theory and with thermoelectric properties extracted using Boltzmann transport equations. We find that with the increase in pressure the system becomes more metallic, in agreement with previous calculations on Sb2Te3. For p-type doping the overall behavior is a decrease in S with an increase in pressure. At small values of hole doping (p=1.8×1018cm-3), we obtain an anomalous variation of S under 2 GPa, which is an indication of the electronic topological transition. For n-type doping, S slightly increases with pressure. © 2014 American Physical Society.
SPIN
ARC Themoterm. Fonds de la Recherche Scientifuque (Communauté Française de Belgique), CECI
Researchers
http://hdl.handle.net/2268/182933
10.1103/PhysRevB.90.245204
http://journals.aps.org/prb/pdf/10.1103/PhysRevB.90.245204
Publisher: American Physical Society

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