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Title: Coexistence of ferromagnetism and superconductivity in CeO_{0.3}F_{0.7}BiS_{2}

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 4.5 K. 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 eld, 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.

Authors:
 [1];  [2];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [3];  [4];  [1]
  1. ORNL
  2. National Institute for Materials Science, Tsukuba, Japan
  3. Tokyo Metropolican University
  4. University of Virginia
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1185720
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 90; Journal Issue: 22; Journal ID: ISSN 1098--0121
Country of Publication:
United States
Language:
English

Citation Formats

Lee, Jooseop, Demura, S, Stone, Matthew B, Iida, Kazuki, Ehlers, Georg, Dela Cruz, Clarina R, Matsuda, Masaaki, Deguchi, K, Mizuguchi, Y, Miura, O, Louca, Despina, and Lee, Seung-Hun. Coexistence of ferromagnetism and superconductivity in CeO_{0.3}F_{0.7}BiS_{2}. United States: N. p., 2014. Web. doi:10.1103/PhysRevB.90.224410.
Lee, Jooseop, Demura, S, Stone, Matthew B, Iida, Kazuki, Ehlers, Georg, Dela Cruz, Clarina R, Matsuda, Masaaki, Deguchi, K, Mizuguchi, Y, Miura, O, Louca, Despina, & Lee, Seung-Hun. Coexistence of ferromagnetism and superconductivity in CeO_{0.3}F_{0.7}BiS_{2}. United States. https://doi.org/10.1103/PhysRevB.90.224410
Lee, Jooseop, Demura, S, Stone, Matthew B, Iida, Kazuki, Ehlers, Georg, Dela Cruz, Clarina R, Matsuda, Masaaki, Deguchi, K, Mizuguchi, Y, Miura, O, Louca, Despina, and Lee, Seung-Hun. 2014. "Coexistence of ferromagnetism and superconductivity in CeO_{0.3}F_{0.7}BiS_{2}". United States. https://doi.org/10.1103/PhysRevB.90.224410.
@article{osti_1185720,
title = {Coexistence of ferromagnetism and superconductivity in CeO_{0.3}F_{0.7}BiS_{2}},
author = {Lee, Jooseop and Demura, S and Stone, Matthew B and Iida, Kazuki and Ehlers, Georg and Dela Cruz, Clarina R and Matsuda, Masaaki and Deguchi, K and Mizuguchi, Y and Miura, O and Louca, Despina and Lee, Seung-Hun},
abstractNote = {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 4.5 K. 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 eld, 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.},
doi = {10.1103/PhysRevB.90.224410},
url = {https://www.osti.gov/biblio/1185720}, journal = {Physical Review B},
issn = {1098--0121},
number = 22,
volume = 90,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 2014},
month = {Wed Jan 01 00:00:00 EST 2014}
}