687 citations · 9.2k across the 149 of their papers we have counts for
7 papers · 1 filter
Unusually large enhancement of thermopower in an electric field induced two-dimensional electron gas
Hiromichi Ohta, Taku Mizuno, Shijian Zheng +6
Two-dimensionally confined electrons showing unusually large thermopower (S) have attracted attention as a potential approach for developing high performance thermoelectric materia…
Thin Film Growth and Device Fabrication of Iron-Based Superconductors
Hidenori Hiramatsu, Takayoshi Katase, Toshio Kamiya +1
Iron-based superconductors have received much attention as a new family of high-temperature superconductors owing to their unique properties and distinct differences from cuprates…
Identical effects of indirect and direct electron doping of superconducting BaFe2As2 thin films
Takayoshi Katase, Soshi Iimura, Hidenori Hiramatsu +2
Electron doping of a 122-type iron pnictide BaFe2As2 by substituting the Ba site with an aliovalent ion (indirect doping), which had been unsuccessful by conventional solid-state s…
Biaxially textured cobalt-doped BaFe2As2 films with high critical current density over 1 MA/cm2 on MgO-buffered metal-tape flexible substrates
Takayoshi Katase, Hidenori Hiramatsu, Vladimir Matias +5
High critical current densities (Jc) > 1 MA/cm2 were realized in cobalt-doped BaFe2As2 (BaFe2As2:Co) films on flexible metal substrates with biaxially-textured MgO base-layers fabr…
Hydrogen in layered iron arsenide: indirect electron doping to induce superconductivity
Taku Hanna, Yoshinori Muraba, Satoru Matsuishi +3
Utilizing the high stability of calcium and rare earth hydrides, CaFeAsF1-xHx (x = 0.0-1.0) and SmFeAsO1-xHx (x = 0.0-0.47) have been first synthesized using high pressure to form…
LaCo2B2: A Co-based layered superconductor with a ThCr2Si2-type structure
Hiroshi Mizoguchi, Toshiaki Kuroda, Toshio Kamiya +1
LaCo2B2 with a ThCr2Si2-type structure composed of alternately stacked La and CoB layers exhibits metallic electrical conductivity and Pauli paramagnetic behavior down to 2K. Bulk…