424 citations · 2.8k across the 48 of their papers we have counts for
48 papers
Nonreciprocal charge transport in an iron-based superconductor with broken inversion symmetry engineered by a hydrogen-concentration gradient
Takayuki Nagai, Yukito Nishio, Jumpei Matsumoto +4
The breaking of spatial inversion symmetry in condensed matter gives rise to intriguing physical properties, such as ferroelectricity, piezoelectricity, spin-momentum locking, and…
High upper critical field (120 T) with small anisotropy of highly hydrogen-substituted SmFeAsO epitaxial film
Kota Hanzawa, Jumpei Matsumoto, Soshi Iimura +3
The electronic transport properties of a highly hydrogen-substituted 1111-type SmFeAsO epitaxial film with high critical-temperature (Tc = 45 K) were investigated under high magnet…
Fully automated spectroscopic ellipsometry analyses of crystalline-phase semiconductors based on a new algorithm
Sara Maeda, Kohei Oiwake, Yukinori Nishigaki +8
One significant drawback of a spectroscopic ellipsometry (SE) technique is its time-consuming and often complicated analysis procedure necessary to assess the optical functions of…
Heteroepitaxial Thin-Film Growth of a Ternary Nitride Semiconductor CaZn2N2
Masatake Tsuji, Kota Hanzawa, Hiroyuki Kinjo +2
Zinc-based nitride CaZn2N2 films grown by molecular beam epitaxy (MBE) with a plasma-assisted active nitrogen-radical source are promising candidates of next-generation semiconduct…
Stabilization and heteroepitaxial growth of metastable tetragonal FeS thin films by pulsed laser deposition
Kota Hanzawa, Masato Sasase, Hidenori Hiramatsu +1
Pulsed laser deposition, a non-equilibrium thin-film growth technique, was used to stabilize metastable tetragonal iron sulfide (FeS), the bulk state of which is known as a superco…
Superconductivity at 48 K of heavily hydrogen-doped SmFeAsO epitaxial films grown by topotactic chemical reaction using CaH2
Jumpei Matsumoto, Kota Hanzawa, Masato Sasase +4
High-critical-temperature (Tc) superconductivity at 48 K is reported for hydrogen-doped SmFeAsO epitaxial films on MgO single-crystal substrates. The key processes are pulsed laser…