Inelastic neutron scattering study of iron-based superconductors FeSe $_{0.5}$ Te $_{0.5}$ and FeSe; Nematic effect of magnetic scattering spectra

Shamoto, Shinichi ; Kodama, Katsuaki ; Kajimoto, Ryoichi ; Nakamura, Mitsutaka ; Ishikado, Motoyuki*; Watashige, Tatsuya*; Kasahara, Shigeru*; Matsuda, Yuji*; Shibauchi, Takasada*; Arai, Masatoshi*

Iron-based superconductors FeSe $_{0.5}$ Te $_{0.5}$ and FeSe have been studied by inelastic neutron scattering measurement. In contrast of FeSe, FeSe $_{0.5}$ Te $_{0.5}$ exhibits temperature dependent incommensurability in magnetic spectrum with no clear structural transition. We find a jump in the incommensurability at about 70 K.

Language	:	Japanese
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Meeting title	:	京都大学基礎物理学研究所研究会「多自由度と相関効果が生み出す超伝導の新潮流; BCSからBECまで」
Held date	:	2015/06
Location (city)	:	京都
Location (country)	:	日本
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Keywords	:	鉄系超伝導体; 中性子散乱
Research Facility	:	J-PARC物質・生命科学実験施設
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Registration No. : BB20150327
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Inelastic neutron scattering study of iron-based superconductors FeSeTe and FeSe; Nematic effect of magnetic scattering spectra

Inelastic neutron scattering study of iron-based superconductors FeSe $_{0.5}$ Te $_{0.5}$ and FeSe; Nematic effect of magnetic scattering spectra