Half-metallic perovskite superlattices with colossal thermoelectric figure of merit
KAUST DepartmentComputational Physics and Materials Science (CPMS)
Materials Science and Engineering Program
Physical Sciences and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/315758
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AbstractNowadays heavy experimental efforts are focussed on doped oxide thermoelectrics to increase the thermopower and thermoelectric performance. We propose a high thermoelectric figure of merit for half-metallic SrTi1−xCoxO3 (x = 0, 0.125, 0.25, 0.375, and 0.5) in a superlattice with SrTiO3, which is stable at high temperatures and in an oxygen environment. The maximal value of Z hardly depends on the doping, while the temperature at which the maximum occurs increases with the Co concentration. The easy tunability from being an insulator to a half-metal under substitutional doping combined with the colossal figure of merit opens up great potential in the emerging field of spin-caloritronics.
CitationKahaly MU, Ozdogan K, Schwingenschlögl U (2013) Half-metallic perovskite superlattices with colossal thermoelectric figure of merit. J Mater Chem A 1: 8406. doi:10.1039/c3ta11346a.
PublisherRoyal Society of Chemistry (RSC)
JournalJournal of Materials Chemistry A