New antiferromagnetic order with pressure-induced superconductivity in EuFeAs

Ikeda, Shugo*; Tsuchiya, Yu*; Zhang, X.-W.*; Kishimoto, Shunji*; Kikegawa, Takumi*; Yoda, Yoshitaka*; Nakamura, Hiroki; Machida, Masahiko; Glasbrenner, J.*; Kobayashi, Hisao*

Physical Review B, 98(10), p.100502_1 - 100502_6, 2018/09

https://doi.org/10.1103/PhysRevB.98.100502

The interplay between magnetism and superconductivity is one of important subjects to investigate the pairing mechanism in novel superconductors. We have found new coexistence between an antiferromagnetic order in the Fe sublattice and superconductivity of the FeAs-based EuFeAs superconductor in the pressure range from 2.4 to 3.0 GPa by Fe nuclear forward scattering (NFS) using a single crystal sample. The magnetic state in the Fe sublattice changes to a new antiferromagnetic one with superconductivity from a stripe-type antiferromagnetic one observed in normal conducting state at 2.7 GPa. Below the superconducting transition temperature, the temperature dependence of Fe NFS spectra reveals that the new antiferromagnetic order develops with the superconductivity. This non-trivial coupling of two ordered states in EuFeAs under pressure demonstrates a new and intriguing relationship between magnetism and superconductivity in Fe-based superconductors.

Nuclear resonant scattering measurements on Fe by multichannel scaling with a 64 pixel silicon avalanche photodiode linear-array detector

Kishimoto, Shunji*; Mitsui, Takaya; Haruki, Rie*; Yoda, Yoshitaka*; Taniguchi, Takashi*; Shimazaki, Shoichi*; Ikeno, Masahiro*; Saito, Masatoshi*; Tanaka, Manobu*

Review of Scientific Instruments, 85(11), p.113102_1 - 113102_5, 2014/11

https://doi.org/10.1063/1.4900862

Investigation on new scintillators for subnanosecond time-resolved X-ray measurements

Haruki, Rie; Shibuya, Kengo*; Nishikido, Fumihiko*; Koshimizu, Masanori*; Yoda, Yoshitaka*; Kishimoto, Shunji*

Journal of Physics; Conference Series, 217, p.012007_1 - 012007_4, 2010/05

https://doi.org/10.1088/1742-6596/217/1/012007

Evaluation of a lead-doped scintillator for application of the synchrotron X-ray time spectroscopy

Kishimoto, Shunji*; Nishikido, Fumihiko*; Haruki, Rie; Koshimizu, Masanori*

no journal, , 

no abstracts in English

Diffusive motion of atoms in a solution studied by nuclear resonant scattering

Haruki, Rie; Imai, Yasuhiko*; Yoda, Yoshitaka*; Koshimizu, Masanori*; Nishikido, Fumihiko*; Shibuya, Kengo*; Kurokuzu, Masayuki*; Kishimoto, Shunji*

no journal, ,