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Homogeneous coexistence of SDW and SC states in CaFe(1-x)Co(x)AsF studied by nuclear magnetic resonance
T. Nakano, S. Tsutsumi, N. Fujiwara +2
We investigated the homogeneous coexistence of spin-density-wave (SDW) and superconducting (SC) states via 75As-nuclear magnetic resonance (NMR) in CaFe(1-x)Co(x)AsF and found that…
Field-induced water electrolysis switches an oxide semiconductor from an insulator to a metal
Hiromichi Ohta, Yukio Sato, Takeharu Kato +4
Here we demonstrate that water-infiltrated nanoporous glass electrically switches an oxide semiconductor from an insulator to metal. We fabricated the field effect transistor struc…
Coexistence of light and heavy carriers associated with superconductivity and anti-ferromagnetism in CeNi0.8Bi2 with a Bi square net
Hiroshi Mizoguchi, Satoru Matsuishi, Masahiro Hirano +4
We found that the ZrCuSiAs-type crystal CeNi0.8Bi2 with a layered structure composed of alternate stacking of [CeNixBi(1)]δ+ and Bi(2)δ- exhibits a superconductive transition at ~4…
Advantageous grain boundaries in iron pnictide superconductors
Takayoshi Katase, Yoshihiro Ishimaru, Akira Tsukamoto +4
High critical temperature superconductors have zero power consumption and could be used to produce ideal electric power lines. The principal obstacle in fabricating superconducting…
Transport and magnetic properties of Co-doped BaFe_{2}As_{2} epitaxial thin films
Shyam Mohan, Toshihiro Taen, Hidenori Yagyuda +5
We report resistivity, Hall coefficient, current-voltage characteristics, and magneto-optical imaging measurements of epitaxial Co-doped BaFe_{2}As_{2} thin films deposited on MgO(…
Magnetic Lattice Dynamics of the Oxygen-Free FeAs Pnictides: How Sensitive are Phonons to Magnetic Ordering?
Mohamed Zbiri, Ranjan Mittal, Stephane Rols +10
To shed light on the role of magnetism on the superconducting mechanism of the oxygen-free FeAs pnictides, we investigate the effect of magnetic ordering on phonon dynamics in the…