Spin resonance on Fe-based superconductor BaFe(As,P) with nodal gap symmetry

Ishikado, Motoyuki; Kodama, Katsuaki ; Wakimoto, Shuichi ; Kajimoto, Ryoichi ; Nakamura, Mitsutaka ; Inamura, Yasuhiro ; Nagai, Yuki ; Nakamura, Hiroki ; Machida, Masahiko ; Suzuki, Katsuhiro*; Usui, Hidetomo*; Kuroki, Kazuhiko*; Iyo, Akira*; Eisaki, Hiroshi*; Arai, Masatoshi; Shamoto, Shinichi

In this study, we performed inelastic neutron scattering measurement on 36g polycrystalline powder sample of optimally-doped BaFe(As $_{0.65}$ P $_{0.35}$ ) using a Fermi chopper spectrometer 4SEASONS in J-PARC. We observed strong spin resonance at the same -position similar to those of other iron-based superconductors with fully-gapped $s_{pm}$ -wave. We will discuss about the possible superconducting gap symmetry and what causes relatively high- $T_{rm c}$ of this material based on our inelastic neutron scattering results.

Language	:	English
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Meeting title	:	8th International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials (New $^{3}$ SC-8)
Held date	:	2011/06
Location (city)	:	Chongqing
Location (country)	:	China
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Keywords	:	no keyword
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Cooperating Institute	:	科学技術振興機構

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Registration No. : BB20110707
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