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Title: Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO0.89F0.11

Abstract

The electronic structure in the normal state of CeFeAsO{sub 0.89}F{sub 0.11} oxypnictide superconductors has been investigated with x-ray absorption and photoemission spectroscopy. All of the data exhibit signatures of Fe d-electron itinerancy. Exchange multiplets appearing in the Fe 3s core level indicate the presence of itinerant spin fluctuations. These findings suggest that the underlying physics and the origin of superconductivity in these materials are likely to be quite different from those of the cuprate high-temperature superconductors. These materials provide opportunities for elucidating the role of magnetic fluctuations in high-temperature superconductivity.

Authors:
 [1];  [2];  [1];  [3];  [4];  [3];  [3];  [3];  [5];  [3];  [3]
  1. CNR-INFM, Trieste, Italy
  2. Sincrotrone Trieste, Basovizza, Italy
  3. ORNL
  4. Oak Ridge National Laboratory (ORNL)
  5. University of Tennessee, Knoxville (UTK)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
961768
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 26; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; CUPRATES; ELECTRONIC STRUCTURE; FLUCTUATIONS; HIGH-TC SUPERCONDUCTORS; MATERIALS; MULTIPLETS; PHOTOEMISSION; PHYSICS; SPECTROSCOPY; SPIN; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TEMPERATURE RANGE 0400-1000 K

Citation Formats

Bondino, F., E., Magnano, Malvestuto, M., Parmigiani, F., McGuire, Michael A, Sefat, A. S., Sales, Brian C, Jin, Rongying, Mandrus, David, Plummer, E. W., Singh, David J, and Mannella, Norman. Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO0.89F0.11. United States: N. p., 2008. Web. doi:10.1103/PhysRevLett.101.267001.
Bondino, F., E., Magnano, Malvestuto, M., Parmigiani, F., McGuire, Michael A, Sefat, A. S., Sales, Brian C, Jin, Rongying, Mandrus, David, Plummer, E. W., Singh, David J, & Mannella, Norman. Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO0.89F0.11. United States. https://doi.org/10.1103/PhysRevLett.101.267001
Bondino, F., E., Magnano, Malvestuto, M., Parmigiani, F., McGuire, Michael A, Sefat, A. S., Sales, Brian C, Jin, Rongying, Mandrus, David, Plummer, E. W., Singh, David J, and Mannella, Norman. Tue . "Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO0.89F0.11". United States. https://doi.org/10.1103/PhysRevLett.101.267001.
@article{osti_961768,
title = {Evidence for Strong Itinerant Spin Fluctuations in the Normal State of CeFeAsO0.89F0.11},
author = {Bondino, F. and E., Magnano and Malvestuto, M. and Parmigiani, F. and McGuire, Michael A and Sefat, A. S. and Sales, Brian C and Jin, Rongying and Mandrus, David and Plummer, E. W. and Singh, David J and Mannella, Norman},
abstractNote = {The electronic structure in the normal state of CeFeAsO{sub 0.89}F{sub 0.11} oxypnictide superconductors has been investigated with x-ray absorption and photoemission spectroscopy. All of the data exhibit signatures of Fe d-electron itinerancy. Exchange multiplets appearing in the Fe 3s core level indicate the presence of itinerant spin fluctuations. These findings suggest that the underlying physics and the origin of superconductivity in these materials are likely to be quite different from those of the cuprate high-temperature superconductors. These materials provide opportunities for elucidating the role of magnetic fluctuations in high-temperature superconductivity.},
doi = {10.1103/PhysRevLett.101.267001},
url = {https://www.osti.gov/biblio/961768}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 26,
volume = 101,
place = {United States},
year = {2008},
month = {1}
}