Tetragonal magnetic phase in Ba1-x KxFe2As2 from x-ray and neutron diffraction

J. M. Allred, S. Avci, D. Y. Chung, H. Claus, D. D. Khalyavin, P. Manuel, K. M. Taddei, Mercouri G Kanatzidis, S. Rosenkranz, R. Osborn, O. Chmaissem

Research output: Contribution to journalArticle

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Abstract

Combined neutron and x-ray diffraction experiments demonstrate the formation of a low-temperature minority magnetic tetragonal phase in Ba0.76K0.24Fe2As2 in addition to the majority magnetic, orthorhombic phase. The coincident enhancement in the magnetic (12 12 1) peaks shows that this minority phase is of the same type that was observed in Ba1-xNaxFe2As2 (0.24≤x≤0.28), in which the magnetic moments reorient along the c axis. This is evidence that the tetragonal magnetic phase is a universal feature of the hole-doped iron-based superconductors. The observations suggest that in this regime the energy levels of the C2 and C4 symmetric magnetic phases are very close.

Original languageEnglish
Article number094515
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number9
DOIs
Publication statusPublished - Sep 28 2015

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Neutron diffraction
minorities
Magnetic moments
Electron energy levels
neutron diffraction
Neutrons
x ray diffraction
Diffraction
X rays
magnetic moments
energy levels
Experiments
iron
neutrons
Temperature
augmentation
Iron-based Superconductors

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Allred, J. M., Avci, S., Chung, D. Y., Claus, H., Khalyavin, D. D., Manuel, P., ... Chmaissem, O. (2015). Tetragonal magnetic phase in Ba1-x KxFe2As2 from x-ray and neutron diffraction. Physical Review B - Condensed Matter and Materials Physics, 92(9), [094515]. https://doi.org/10.1103/PhysRevB.92.094515

Tetragonal magnetic phase in Ba1-x KxFe2As2 from x-ray and neutron diffraction. / Allred, J. M.; Avci, S.; Chung, D. Y.; Claus, H.; Khalyavin, D. D.; Manuel, P.; Taddei, K. M.; Kanatzidis, Mercouri G; Rosenkranz, S.; Osborn, R.; Chmaissem, O.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 9, 094515, 28.09.2015.

Research output: Contribution to journalArticle

Allred, JM, Avci, S, Chung, DY, Claus, H, Khalyavin, DD, Manuel, P, Taddei, KM, Kanatzidis, MG, Rosenkranz, S, Osborn, R & Chmaissem, O 2015, 'Tetragonal magnetic phase in Ba1-x KxFe2As2 from x-ray and neutron diffraction', Physical Review B - Condensed Matter and Materials Physics, vol. 92, no. 9, 094515. https://doi.org/10.1103/PhysRevB.92.094515
Allred, J. M. ; Avci, S. ; Chung, D. Y. ; Claus, H. ; Khalyavin, D. D. ; Manuel, P. ; Taddei, K. M. ; Kanatzidis, Mercouri G ; Rosenkranz, S. ; Osborn, R. ; Chmaissem, O. / Tetragonal magnetic phase in Ba1-x KxFe2As2 from x-ray and neutron diffraction. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 92, No. 9.
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