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Controlling Factors of Tc-Dome Structure in 1111-Type Iron Arsenide Superconductors
Satoru Matsuishi, Takuya Maruyama, Soshi Iimura +1
We investigated the effects of phosphorus substitution on the shape of the Tc(x) dome in 1111-type SmFeAs1-yPyO1-xHx (0 < x < 0.5). Hydride ion substitution of oxide sites (O2- ->…
Enhancing the three-dimensional electronic structure in 1111-type iron arsenide superconductors by H-substitution
Yoshinori Muraba, Satoru Matsuishi, Hideo Hosono
The 1111-type iron arsenide hydride CaFe1-xCoxAsH was synthesized by high-pressure solid-state reaction, and its electronic structure and superconducting properties were investigat…
Epitaxial Growth and Electronic Structure of a Layered Zinc Pnictide Semiconductor, beta-BaZn2As2
Zewen Xiao, Fan-Yong Ran, Hidenori Hiramatsu +3
BaZn2As2 is expected for a good p-type semiconductor and has two crystalline phases of an orthorhombic alpha phase and a higher-symmetry tetragonal beta phase. Here, we report high…
Structural, Magnetic, and Electrical Properties of Li2Ir1-xRuxO3
Hechang Lei, Wei-Guo Yin, Zhicheng Zhong +1
The crystal structure, resistivity, and magnetic susceptibility of the Li2Ir1-xRuxO3 (x = 0-1) polycrystals have been investigated. We found that the parent antiferromagnetic phase…
Model of the Electronic Structure of Electron-Doped Iron-Based Superconductors: Evidence for Enhanced Spin Fluctuations by Diagonal Electron Hopping
Katsuhiro Suzuki, Hidetomo Usui, Soshi Iimura +4
We present a theoretical understanding of the superconducting phase diagram of the electron-doped iron pnictides. We show that, besides the Fermi surface nesting, a peculiar motion…
Unusual pressure effects on the superconductivity of indirectly electron-doped (Ba1-xLax)Fe2As2 epitaxial films
Takayoshi Katase, Hikaru Sato, Hidenori Hiramatsu +2
Applying an external pressure to indirectly electron-doped 122-type (Ba1-xLax)Fe2As2 epitaxial films enhances the superconducting critical temperature (Tc) up to 30.3 K. Different…