Electronic and magnetic phase diagram of superconductors, SmFeAsO 1-xFx

Yoichi Kamihara; Takatoshi Nomura; Masahiro Hirano; Jung Eun Kim; Kenichi Kato; Masaki Takata; Yasuhiro Kobayashi; Shinji Kitao; Satoshi Higashitaniguchi; Yoshitaka Yoda; Makoto Seto; Hideo Hosono

doi:10.1088/1367-2630/12/3/033005

Electronic and magnetic phase diagram of superconductors, SmFeAsO _1-xF_x

Yoichi Kamihara, Takatoshi Nomura, Masahiro Hirano, Jung Eun Kim, Kenichi Kato, Masaki Takata, Yasuhiro Kobayashi, Shinji Kitao, Satoshi Higashitaniguchi, Yoshitaka Yoda, Makoto Seto, Hideo Hosono

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

77 Citations (Scopus)

Abstract

A crystallographic and magnetic phase diagram of SmFeAsO _1-xF_x is determined as a function of x in terms of temperature based on electrical transport and magnetization, synchrotron powder x-ray diffraction, ⁵⁷Fe Mössbauer spectra (MS), and ¹⁴⁹Sm nuclear resonant forward scattering (NRFS) measurements. MS revealed that the magnetic moments of Fe were aligned antiferromagnetically at ~144 K (T_N(Fe)). The magnetic moment of Fe (MFe) is estimated to be 0.34 μ_B/Fe at 4.2 K for undoped SmFeAsO; M_Fe is quenched in superconducting F-doped SmFeAsO. ¹⁴⁹Sm NRFS spectra revealed that the magnetic moments of Sm start to order antiferromagnetically at 5.6 K (undoped) and 4.4 K (T_N(Sm)) (x = 0.069). Results clearly indicate that the antiferromagnetic (AF) Sm sublattice coexists with the superconducting phase in SmFeAsO_1-xF_x below T _N(Sm), while the AF Fe sublattice does not coexist with the superconducting phase.

Original language	English
Article number	033005
Journal	New Journal of Physics
Volume	12
DOIs	https://doi.org/10.1088/1367-2630/12/3/033005
Publication status	Published - 2010 Mar 5
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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@article{03fff6f478d24359ad7781ed7ef915e1,

title = "Electronic and magnetic phase diagram of superconductors, SmFeAsO 1-xFx",

abstract = "A crystallographic and magnetic phase diagram of SmFeAsO 1-xFx is determined as a function of x in terms of temperature based on electrical transport and magnetization, synchrotron powder x-ray diffraction, 57Fe M{\"o}ssbauer spectra (MS), and 149Sm nuclear resonant forward scattering (NRFS) measurements. MS revealed that the magnetic moments of Fe were aligned antiferromagnetically at ~144 K (TN(Fe)). The magnetic moment of Fe (MFe) is estimated to be 0.34 μB/Fe at 4.2 K for undoped SmFeAsO; MFe is quenched in superconducting F-doped SmFeAsO. 149Sm NRFS spectra revealed that the magnetic moments of Sm start to order antiferromagnetically at 5.6 K (undoped) and 4.4 K (TN(Sm)) (x = 0.069). Results clearly indicate that the antiferromagnetic (AF) Sm sublattice coexists with the superconducting phase in SmFeAsO1-xFx below T N(Sm), while the AF Fe sublattice does not coexist with the superconducting phase.",

author = "Yoichi Kamihara and Takatoshi Nomura and Masahiro Hirano and Kim, {Jung Eun} and Kenichi Kato and Masaki Takata and Yasuhiro Kobayashi and Shinji Kitao and Satoshi Higashitaniguchi and Yoshitaka Yoda and Makoto Seto and Hideo Hosono",

year = "2010",

month = mar,

day = "5",

doi = "10.1088/1367-2630/12/3/033005",

language = "English",

volume = "12",

journal = "New Journal of Physics",

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T1 - Electronic and magnetic phase diagram of superconductors, SmFeAsO 1-xFx

AU - Kamihara, Yoichi

AU - Nomura, Takatoshi

AU - Hirano, Masahiro

AU - Kim, Jung Eun

AU - Kato, Kenichi

AU - Takata, Masaki

AU - Kobayashi, Yasuhiro

AU - Kitao, Shinji

AU - Higashitaniguchi, Satoshi

AU - Yoda, Yoshitaka

AU - Seto, Makoto

AU - Hosono, Hideo

PY - 2010/3/5

Y1 - 2010/3/5

N2 - A crystallographic and magnetic phase diagram of SmFeAsO 1-xFx is determined as a function of x in terms of temperature based on electrical transport and magnetization, synchrotron powder x-ray diffraction, 57Fe Mössbauer spectra (MS), and 149Sm nuclear resonant forward scattering (NRFS) measurements. MS revealed that the magnetic moments of Fe were aligned antiferromagnetically at ~144 K (TN(Fe)). The magnetic moment of Fe (MFe) is estimated to be 0.34 μB/Fe at 4.2 K for undoped SmFeAsO; MFe is quenched in superconducting F-doped SmFeAsO. 149Sm NRFS spectra revealed that the magnetic moments of Sm start to order antiferromagnetically at 5.6 K (undoped) and 4.4 K (TN(Sm)) (x = 0.069). Results clearly indicate that the antiferromagnetic (AF) Sm sublattice coexists with the superconducting phase in SmFeAsO1-xFx below T N(Sm), while the AF Fe sublattice does not coexist with the superconducting phase.

AB - A crystallographic and magnetic phase diagram of SmFeAsO 1-xFx is determined as a function of x in terms of temperature based on electrical transport and magnetization, synchrotron powder x-ray diffraction, 57Fe Mössbauer spectra (MS), and 149Sm nuclear resonant forward scattering (NRFS) measurements. MS revealed that the magnetic moments of Fe were aligned antiferromagnetically at ~144 K (TN(Fe)). The magnetic moment of Fe (MFe) is estimated to be 0.34 μB/Fe at 4.2 K for undoped SmFeAsO; MFe is quenched in superconducting F-doped SmFeAsO. 149Sm NRFS spectra revealed that the magnetic moments of Sm start to order antiferromagnetically at 5.6 K (undoped) and 4.4 K (TN(Sm)) (x = 0.069). Results clearly indicate that the antiferromagnetic (AF) Sm sublattice coexists with the superconducting phase in SmFeAsO1-xFx below T N(Sm), while the AF Fe sublattice does not coexist with the superconducting phase.

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Electronic and magnetic phase diagram of superconductors, SmFeAsO _1-xF_x

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