Coexistence of superconductivity and antiferromagnetic ordering in the layered superconductor SmFePO

Yoichi Kamihara; Hidenori Hiramatsu; Masahiro Hirano; Yasuhiro Kobayashi; Shinji Kitao; Satoshi Higashitaniguchi; Yoshitaka Yoda; Makoto Seto; Hideo Hosono

doi:10.1103/PhysRevB.78.184512

Coexistence of superconductivity and antiferromagnetic ordering in the layered superconductor SmFePO

Yoichi Kamihara, Hidenori Hiramatsu, Masahiro Hirano, Yasuhiro Kobayashi, Shinji Kitao, Satoshi Higashitaniguchi, Yoshitaka Yoda, Makoto Seto, Hideo Hosono

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

Superconductivity and magnetic transition in SmFePO were examined by electric, magnetic, F 57 e Mössbauer, and S 149 m nuclear resonant forward-scattering (NRFS) measurements. Zero resistivity and negative magnetic susceptibility were observed in an undoped SmFePO, indicating superconducting transition temperature (Tc) of ∼3 K. Tc in undoped SmFePO appears in a narrow region of lattice constants with an optimum conductivity. Furthermore, in relation to magnetic susceptibility, NRFS spectra verify that magnetic moments of Sm3+ ions order antiferromagnetically below magnetic transition ∼5 K, accompanying a discontinuous drop in electrical resistivity, whereas F 57 e Mössbauer spectra show that magnetic moments of Fe are quenched. These results indicate the coexistence of superconductivity and magnetic ordering in a crystallographic unit cell of SmFePO.

Original language	English
Article number	184512
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.78.184512
Publication status	Published - 2008 Nov 18
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Coexistence of superconductivity and antiferromagnetic ordering in the layered superconductor SmFePO. / Kamihara, Yoichi; Hiramatsu, Hidenori; Hirano, Masahiro; Kobayashi, Yasuhiro; Kitao, Shinji; Higashitaniguchi, Satoshi; Yoda, Yoshitaka; Seto, Makoto; Hosono, Hideo.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 18, 184512, 18.11.2008.

Research output: Contribution to journal › Article › peer-review

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abstract = "Superconductivity and magnetic transition in SmFePO were examined by electric, magnetic, F 57 e M{\"o}ssbauer, and S 149 m nuclear resonant forward-scattering (NRFS) measurements. Zero resistivity and negative magnetic susceptibility were observed in an undoped SmFePO, indicating superconducting transition temperature (Tc) of ∼3 K. Tc in undoped SmFePO appears in a narrow region of lattice constants with an optimum conductivity. Furthermore, in relation to magnetic susceptibility, NRFS spectra verify that magnetic moments of Sm3+ ions order antiferromagnetically below magnetic transition ∼5 K, accompanying a discontinuous drop in electrical resistivity, whereas F 57 e M{\"o}ssbauer spectra show that magnetic moments of Fe are quenched. These results indicate the coexistence of superconductivity and magnetic ordering in a crystallographic unit cell of SmFePO.",

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AU - Kamihara, Yoichi

AU - Hiramatsu, Hidenori

AU - Hirano, Masahiro

AU - Kobayashi, Yasuhiro

AU - Kitao, Shinji

AU - Higashitaniguchi, Satoshi

AU - Yoda, Yoshitaka

AU - Seto, Makoto

AU - Hosono, Hideo

PY - 2008/11/18

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N2 - Superconductivity and magnetic transition in SmFePO were examined by electric, magnetic, F 57 e Mössbauer, and S 149 m nuclear resonant forward-scattering (NRFS) measurements. Zero resistivity and negative magnetic susceptibility were observed in an undoped SmFePO, indicating superconducting transition temperature (Tc) of ∼3 K. Tc in undoped SmFePO appears in a narrow region of lattice constants with an optimum conductivity. Furthermore, in relation to magnetic susceptibility, NRFS spectra verify that magnetic moments of Sm3+ ions order antiferromagnetically below magnetic transition ∼5 K, accompanying a discontinuous drop in electrical resistivity, whereas F 57 e Mössbauer spectra show that magnetic moments of Fe are quenched. These results indicate the coexistence of superconductivity and magnetic ordering in a crystallographic unit cell of SmFePO.

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