[17p-Z20-1~13] 11.1 Fundamental properties

[17p-Z20-12] Measurements of the resistivity anisotropy of NdFeAs(O,H) thin films using vicinal-cut substrates

〇Mingyu Chen¹, Keisuke Kondo¹, Takafumi Hatano^1,2, Takahiro Urata¹, Kazumasa Iida^1,2, Hiroshi Ikuta¹ (1.Nagoya Univ., 2.JST CREST)

Keywords:supercondutivity, Hydrogen doped NdFeAsO, Resistivity anisotropy

We have measured the resistivity along the ab-plane (ρ_ab) and c-axis (ρ_c) using NdFeAs(O,H) thin films epitaxially grown on vicinal-cut substrates. ρ_c is larger than ρ_ab, and both show metallic behaviors. The anisotropy of the resistivity of NdFeAs(O,H) is 17 at 300K, which is about a quarter of that of NdFeAs(O,F). This difference is getting larger with decreasing temperature, and becomes one-fifth at 50K.