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Transverse thermoelectric effect in La$$_{0.67}$$Sr$$_{0.33}$$MnO$$_3$$|SrRuO$$_3$$ superlattices


塩見 雄毅*; 半田 優*; 吉川 貴史*; 齊藤 英治

Shiomi, Yuki*; Handa, Yu*; Kikkawa, Takashi*; Saito, Eiji

Transverse thermoelectric effects in response to an out-of-plane heat current have been studied in an external magnetic field for ferromagnetic superlattices consisting of La$$_{0.67}$$Sr$$_{0.33}$$MnO$$_3$$ and SrRuO$$_3$$ layers. The superlattices were fabricated on SrTiO$$_3$$ substrates by pulsed laser deposition. We found that the sign of the transverse thermoelectric voltage for the superlattices is opposite to that for La$$_{0.67}$$Sr$$_{0.33}$$MnO$$_3$$ and SrRuO$$_3$$ single layers at 200 K, implying an important role of spin Seebeck effects inside the superlattices. At 10 K, the magnetothermoelectric curves shift from the zero field due to an antiferromagnetic coupling between layers in the superlattices.



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分野：Physics, Applied


