Coexistence of ferromagnetism and superconductivity in CeO0.3 F0.7BiS2

J. Lee; S. Demura; M. B. Stone; K. Iida; G. Ehlers; C. R. Dela Cruz; M. Matsuda; K. Deguchi; Y. Takano; Y. Mizuguchi; O. Miura; D. Louca; S. H. Lee

doi:10.1103/PhysRevB.90.224410

Coexistence of ferromagnetism and superconductivity in CeO0.3 F0.7BiS2

J. Lee, S. Demura, M. B. Stone, K. Iida, G. Ehlers, C. R. Dela Cruz, M. Matsuda, K. Deguchi, Y. Takano, Y. Mizuguchi, O. Miura, D. Louca, S. H. Lee

研究成果: ジャーナルへの寄稿 › 記事 › 査読

25 被引用数 (Scopus)

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Bulk magnetization, transport, and neutron scattering measurements were performed to investigate the electronic and magnetic properties of a polycrystalline sample of the newly discovered ferromagnetic superconductor, CeO0.3F0.7BiS2. Ferromagnetism develops below TFM=6.54(8)K and superconductivity is found to coexist with the ferromagnetic state below TSC∼4.5K. Inelastic neutron scattering measurements reveal a very weakly dispersive magnetic excitation at 1.8 meV that can be explained by an Ising-like spin Hamiltonian. Under application of an external magnetic field, the direction of the magnetic moment changes from the c axis to the ab plane and the 1.8 meV excitation splits into two modes. A possible mechanism for the unusual magnetism and its relation to superconductivity is discussed.

本文言語	英語
論文番号	224410
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	90
号	22
DOI	https://doi.org/10.1103/PhysRevB.90.224410
出版ステータス	出版済み - 8 12月 2014
外部発表	はい

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title = "Coexistence of ferromagnetism and superconductivity in CeO0.3 F0.7BiS2",

abstract = "Bulk magnetization, transport, and neutron scattering measurements were performed to investigate the electronic and magnetic properties of a polycrystalline sample of the newly discovered ferromagnetic superconductor, CeO0.3F0.7BiS2. Ferromagnetism develops below TFM=6.54(8)K and superconductivity is found to coexist with the ferromagnetic state below TSC∼4.5K. Inelastic neutron scattering measurements reveal a very weakly dispersive magnetic excitation at 1.8 meV that can be explained by an Ising-like spin Hamiltonian. Under application of an external magnetic field, the direction of the magnetic moment changes from the c axis to the ab plane and the 1.8 meV excitation splits into two modes. A possible mechanism for the unusual magnetism and its relation to superconductivity is discussed.",

author = "J. Lee and S. Demura and Stone, {M. B.} and K. Iida and G. Ehlers and {Dela Cruz}, {C. R.} and M. Matsuda and K. Deguchi and Y. Takano and Y. Mizuguchi and O. Miura and D. Louca and Lee, {S. H.}",

note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",

year = "2014",

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doi = "10.1103/PhysRevB.90.224410",

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AU - Lee, J.

AU - Demura, S.

AU - Stone, M. B.

AU - Iida, K.

AU - Ehlers, G.

AU - Dela Cruz, C. R.

AU - Matsuda, M.

AU - Deguchi, K.

AU - Takano, Y.

AU - Mizuguchi, Y.

AU - Miura, O.

AU - Louca, D.

AU - Lee, S. H.

PY - 2014/12/8

Y1 - 2014/12/8

N2 - Bulk magnetization, transport, and neutron scattering measurements were performed to investigate the electronic and magnetic properties of a polycrystalline sample of the newly discovered ferromagnetic superconductor, CeO0.3F0.7BiS2. Ferromagnetism develops below TFM=6.54(8)K and superconductivity is found to coexist with the ferromagnetic state below TSC∼4.5K. Inelastic neutron scattering measurements reveal a very weakly dispersive magnetic excitation at 1.8 meV that can be explained by an Ising-like spin Hamiltonian. Under application of an external magnetic field, the direction of the magnetic moment changes from the c axis to the ab plane and the 1.8 meV excitation splits into two modes. A possible mechanism for the unusual magnetism and its relation to superconductivity is discussed.

AB - Bulk magnetization, transport, and neutron scattering measurements were performed to investigate the electronic and magnetic properties of a polycrystalline sample of the newly discovered ferromagnetic superconductor, CeO0.3F0.7BiS2. Ferromagnetism develops below TFM=6.54(8)K and superconductivity is found to coexist with the ferromagnetic state below TSC∼4.5K. Inelastic neutron scattering measurements reveal a very weakly dispersive magnetic excitation at 1.8 meV that can be explained by an Ising-like spin Hamiltonian. Under application of an external magnetic field, the direction of the magnetic moment changes from the c axis to the ab plane and the 1.8 meV excitation splits into two modes. A possible mechanism for the unusual magnetism and its relation to superconductivity is discussed.

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U2 - 10.1103/PhysRevB.90.224410

DO - 10.1103/PhysRevB.90.224410

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JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 22

M1 - 224410

ER -

Coexistence of ferromagnetism and superconductivity in CeO0.3 F0.7BiS2

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