41 citations · 187 across the 14 of their papers we have counts for
14 papers
Pressure-induced superconductivity in TiGeTe
Sayaka Yamamoto, Ryo Matsumoto, Shintaro Adachi +5
Layered ternary transition-metal chalcogenides have been focused as a vein of exploration for superconductors. In this study, TiGeTe single crystals were synthesized and char…
Crystal Growth and High-Pressure Effects of Bi-Based Superconducting Whiskers
Ryo Matsumoto, Sayaka Yamamoto, Yoshihiko Takano +1
Three growth methods were tested for producing high-transition temperature superconducting BiSrCaCuO whiskers, employing different ways to focus a co…
Pressure-Induced Superconductivity in Layered Transition-metal Chalcogenides (Zr,Hf)GeTe Explored by Data-driven Approach
Ryo Matsumoto, Zhufeng Hou, Shintaro Adachi +6
Layered transition-metal chalcogenides (Zr,Hf)GeTe were screened out from database of Atomwork as a candidate for pressure-induced superconductivity due to their narrow band…
Crystal Size Improvement of Bi-based Superconducting Whiskers under Stress-controlled Condition
Sayaka Yamamoto, Ryo Matsumoto, Shintaro Adachi +3
Using stress-controlled amorphous precursors, we have successfully grown large (Bi-based) high-transition tempe…
Crystal Growth of BiSrCaCuO Whiskers from Pulverized Amorphous Precursors
Ryo Matsumoto, Sayaka Yamamoto, Yoshihiko Takano +1
High-transition temperature superconducting whiskers of BiSrCaCuO were successfully grown from pulverized amorphous precursors. The obtained whiskers reve…
Direct Patterning of Boron-doped Amorphous Carbon Using Focused Ion Beam-assisted Chemical Vapor Deposition
Ryo Matsumoto, El Hadi S. Sadki, Hiromi Tanaka +4
The deposition of boron-doped amorphous carbon thin films on SiO2 substrate was achieved via a focused ion beam-assisted chemical vapor deposition of triphenyl borane (C18H15B) and…
Mask-less Patterning of Gallium-irradiated Superconducting Silicon Using Focused Ion Beam
Ryo Matsumoto, Shintaro Adachi, El Hadi S. Sadki +4
A direct patterning technique of gallium-irradiated superconducting silicon has been established by focused gallium-ion beam without any mask-based lithography process. The electri…
Data-driven Exploration of Pressure-Induced Superconductivity in AgInSe
Ryo Matsumoto, Hiroshi Hara, Zhufeng Hou +8
Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by a high-throughpu…
Pressure-induced Superconductivity in Tin Sulfide
Ryo Matsumoto, Peng Song, Shintaro Adachi +8
Tin sulfide (SnS) was successfully synthesized in single crystals by a melt and slow-cooling method. The obtained sample was characterized by an X-ray diffraction, an energy disper…
Pressure-induced Insulator to Metal Transition of Mixed Valence Compound Ce(O,F)SbS
Ryo Matsumoto, Masanori Nagao, Masayuki Ochi +11
Transport properties of CeF0.15SbS and undoped CeOSbS under high pressure were investigated experimentally and theoretically. Electrical resistivity measuremen…
Data-driven Exploration of New Pressure-induced Superconductivity in PbBiTe with Two Transition Temperatures
Ryo Matsumoto, Zhufeng Hou, Masanori Nagao +10
Candidates compounds for new thermoelectric and superconducting materials, which have narrow band gap and flat bands near band edges, were exhaustively searched by the high-through…
Pressure-induced Superconductivity in Sulfur-doped SnSe Single Crystal Using Boron-doped Diamond Electrode-prefabricated Diamond Anvil Cell
Ryo Matsumoto, Hiroshi Hara, Hiromi Tanaka +8
Sulfur-doped SnSe single crystal was successfully synthesized using a melt and slow-cooling method. The chemical composition and valence state of the obtained sample were analyzed…
Electronic Transport Properties of Carrier Controlled SnSe Single Crystals
Aichi Yamashita, Osamu Ogiso, Ryo Matsumoto +6
We found that the electronic transport property of SnSe single crystals was sensitive to oxygen content. Semiconducting SnSe single crystals were obtained by using Sn of grain form…
Superconductivity and its Enhancement under High Pressure in "F-free" Single Crystals of CeOBiS
Masashi Tanaka, Masanori Nagao, Ryo Matsumoto +6
"F-free" CeOBiS single crystals have successfully grown, thoroughly eliminating a concern about F-contamination by using a high-purity CsCl flux. The obtained crystals have a p…