Magnetically driven suppression of nematic order in an iron-based superconductor

S. Avci, O. Chmaissem, J. M. Allred, S. Rosenkranz, I. Eremin, A. V. Chubukov, D. E. Bugaris, D. Y. Chung, Mercouri G Kanatzidis, J. P. Castellan, J. A. Schlueter, H. Claus, D. D. Khalyavin, P. Manuel, A. Daoud-Aladine, R. Osborn

Research output: Contribution to journalArticle

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Abstract

A theory of superconductivity in the iron-based materials requires an understanding of the phase diagram of the normal state. In these compounds, superconductivity emerges when stripe spin density wave (SDW) order is suppressed by doping, pressure or atomic disorder. This magnetic order is often pre-empted by nematic order, whose origin is yet to be resolved. One scenario is that nematic order is driven by orbital ordering of the iron 3d electrons that triggers stripe SDW order. Another is that magnetic interactions produce a spin-nematic phase, which then induces orbital order. Here we report the observation by neutron powder diffraction of an additional fourfold-symmetric phase in Ba 1 ̂'x Na x Fe 2 As 2 close to the suppression of SDW order, which is consistent with the predictions of magnetically driven models of nematic order.

Original languageEnglish
Article number3845
JournalNature Communications
Volume5
DOIs
Publication statusPublished - May 22 2014

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Spin density waves
Iron
retarding
Neutron Diffraction
Superconductivity
Powder Diffraction
iron
Neutron powder diffraction
superconductivity
Observation
Electrons
Pressure
orbitals
Phase diagrams
Doping (additives)
actuators
phase diagrams
disorders
neutrons
Iron-based Superconductors

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Chemistry(all)
  • Physics and Astronomy(all)

Cite this

Avci, S., Chmaissem, O., Allred, J. M., Rosenkranz, S., Eremin, I., Chubukov, A. V., ... Osborn, R. (2014). Magnetically driven suppression of nematic order in an iron-based superconductor. Nature Communications, 5, [3845]. https://doi.org/10.1038/ncomms4845

Magnetically driven suppression of nematic order in an iron-based superconductor. / Avci, S.; Chmaissem, O.; Allred, J. M.; Rosenkranz, S.; Eremin, I.; Chubukov, A. V.; Bugaris, D. E.; Chung, D. Y.; Kanatzidis, Mercouri G; Castellan, J. P.; Schlueter, J. A.; Claus, H.; Khalyavin, D. D.; Manuel, P.; Daoud-Aladine, A.; Osborn, R.

In: Nature Communications, Vol. 5, 3845, 22.05.2014.

Research output: Contribution to journalArticle

Avci, S, Chmaissem, O, Allred, JM, Rosenkranz, S, Eremin, I, Chubukov, AV, Bugaris, DE, Chung, DY, Kanatzidis, MG, Castellan, JP, Schlueter, JA, Claus, H, Khalyavin, DD, Manuel, P, Daoud-Aladine, A & Osborn, R 2014, 'Magnetically driven suppression of nematic order in an iron-based superconductor', Nature Communications, vol. 5, 3845. https://doi.org/10.1038/ncomms4845
Avci S, Chmaissem O, Allred JM, Rosenkranz S, Eremin I, Chubukov AV et al. Magnetically driven suppression of nematic order in an iron-based superconductor. Nature Communications. 2014 May 22;5. 3845. https://doi.org/10.1038/ncomms4845
Avci, S. ; Chmaissem, O. ; Allred, J. M. ; Rosenkranz, S. ; Eremin, I. ; Chubukov, A. V. ; Bugaris, D. E. ; Chung, D. Y. ; Kanatzidis, Mercouri G ; Castellan, J. P. ; Schlueter, J. A. ; Claus, H. ; Khalyavin, D. D. ; Manuel, P. ; Daoud-Aladine, A. ; Osborn, R. / Magnetically driven suppression of nematic order in an iron-based superconductor. In: Nature Communications. 2014 ; Vol. 5.
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