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

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

26 Scopus citations

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.

Original language	English
Article number	224410
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	90
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.90.224410
State	Published - Dec 8 2014

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10.1103/PhysRevB.90.224410

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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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day = "8",

doi = "10.1103/PhysRevB.90.224410",

language = "English",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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T1 - Coexistence of ferromagnetism and superconductivity in CeO0.3 F0.7BiS2

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.

UR - https://www.scopus.com/pages/publications/84918826669

U2 - 10.1103/PhysRevB.90.224410

DO - 10.1103/PhysRevB.90.224410

M3 - Article

AN - SCOPUS:84918826669

SN - 1098-0121

VL - 90

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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