Enhanced Seebeck coefficient in EuTe∕PbTe [100] short-period superlattices | Zendy

Akihiro Ishida | Zendy; Daoshe Cao | Zendy; Sinsuke Morioka | Zendy; Martin Veis | Zendy; Y. Inoue | Zendy; Takuji Kita | Zendy

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Enhanced Seebeck coefficient in EuTe∕PbTe [100] short-period superlattices

Author(s) -

Akihiro Ishida,

Daoshe Cao,

Sinsuke Morioka,

Martin Veis,

Y. Inoue,

Takuji Kita

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2917482

Subject(s) - superlattice , seebeck coefficient , thermoelectric effect , condensed matter physics , materials science , substrate (aquarium) , electronic band structure , conduction band , thermodynamics , physics , electron , geology , quantum mechanics , oceanography

Theoretical and experimental studies on Seebeck effect in EuTe∕PbTe superlattices were performed. Theoretical calculations, which take into account temperature dependent band gap, nonparabolicity, and anisotropy of effective masses in the PbTe conduction band, were performed in the framework of Boltzmann equation in which enhancement of Seebeck coefficient in EuTe∕PbTe short-period superlattices grown in [100] direction was predicted. The EuTe∕PbTe short-period superlattices with few monolayers EuTe were prepared on KCl (100) substrate and an enhanced Seebeck coefficient was observed in these superlattices as expected by theoretical calculations.

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