53 citations · 74 across the 2 of their papers we have counts for
6 papers
Large Thermoelectric Power Factor in One-Dimensional Telluride Nb4SiTe4 and Substituted Compounds
Yoshihiko Okamoto, Taichi Wada, Youichi Yamakawa +2
We found that whisker crystals of Mo-doped Nb4SiTe4 show high thermoelectric performances at low temperatures, indicated by the largest power factor of 70 microW cm-1 K-2 at 230-30…
Large Thermoelectric Power Factor at Low Temperatures in One-Dimensional Telluride Ta4SiTe4
Takumi Inohara, Yoshihiko Okamoto, Youichi Yamakawa +2
We report the discovery of a very large thermoelectric power over -400 microV K-1 in the whisker crystals of a one-dimensional telluride Ta4SiTe4, while maintaining a low electrica…
Crossing-Line-Node Semimetals: General Theory and Application to Rare-Earth Trihydrides
Shingo Kobayashi, Youichi Yamakawa, Ai Yamakage +3
Multiple line nodes in energy-band gaps are found in semimetals preserving mirror-reflection symmetry. We classify possible configurations of multiple line nodes with crossing poin…
Low Carrier Density Metal Realized in Candidate Line-Node Dirac Semimetals CaAgP and CaAgAs
Yoshihiko Okamoto, Takumi Inohara, Ai Yamakage +2
We study polycrystalline samples of the hexagonal pnictides, CaAgP and CaAgAs, both of which are ideal candidates for line-node Dirac semimetals. The polycrystalline samples of CaA…
Synthesis and Superconducting Properties of a Hexagonal Phosphide ScRhP
Takumi Inohara, Yoshihiko Okamoto, Youichi Yamakawa +1
We report the synthesis and superconducting properties of the ternary phosphide ScRhP. The crystal structure of ScRhP is determined to be the ordered Fe2P type with the hexagonal P…
Superconductivity in the Hexagonal Ternary Phosphide ScIrP
Yoshihiko Okamoto, Takumi Inohara, Youichi Yamakawa +2
We report the discovery of a bulk superconducting transition at 3.4 K in the ternary phosphide, ScIrP, which crystallizes in a hexagonal ZrNiAl-type structure without spatial inver…