[20p-C310-1~16] 6.4 Thin films and New materials

[20p-C310-12] Thermopower of Brownmillerite SrCoO_2.5 Epitaxial Films Grown on Various Substrates

Qian Yang¹, Hai Jun Cho^1,2, Joonhyuk Lee³, Bin Feng⁴, Yuichi Ikuhara⁴, Hyoungjeen Jeen³, 〇Hiromichi Ohta^1,2 (1.IST-Hokkaido Univ., 2.RIES-Hokkaido Univ., 3.Pusan Nat'l Univ., 4.Univ. Tokyo)

Keywords:SrCoO2.5, thermopower, epitaxial films

We fabricated brownmillerite SrCoO_2.5 films (thickness: ~50 nm) on various oxide single crystal substrate with perovskite structure by PLD and investigated their thermopower. We found anomolous thermopower behaviour of SrCoO_2.5, most likely due to its multiple bands.