Coincident structural and magnetic order in BaFe2(As1-x Px)2 revealed by high-resolution neutron diffraction

J. M. Allred, K. M. Taddei, D. E. Bugaris, S. Avci, D. Y. Chung, H. Claus, C. Dela Cruz, Mercouri G Kanatzidis, S. Rosenkranz, R. Osborn, O. Chmaissem

Research output: Contribution to journalArticle

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Abstract

We present neutron diffraction analysis of BaFe2(As1-xPx)2 over a wide temperature (10 to 300 K) and compositional (0.11≤x≤0.79) range, including the normal state, the magnetically ordered state, and the superconducting state. The paramagnetic to spin-density wave and orthorhombic to tetragonal transitions are first order and coincident within the sensitivity of our measurements (∼0.5 K). Extrapolation of the orthorhombic order parameter down to zero suggests that structural quantum criticality cannot exist at compositions higher than x=0.28, which is much lower than values determined using other methods, but in good agreement with our observations of the actual phase stability range. The onset of spin-density wave order shows a stronger structural anomaly than the charge-doped system in the form of an enhancement of the c/a ratio below the transition.

Original languageEnglish
Article number104513
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number10
DOIs
Publication statusPublished - Sep 19 2014

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Spin density waves
Neutron diffraction
neutron diffraction
Phase stability
high resolution
Extrapolation
extrapolation
anomalies
augmentation
Chemical analysis
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Coincident structural and magnetic order in BaFe2(As1-x Px)2 revealed by high-resolution neutron diffraction. / Allred, J. M.; Taddei, K. M.; Bugaris, D. E.; Avci, S.; Chung, D. Y.; Claus, H.; Dela Cruz, C.; Kanatzidis, Mercouri G; Rosenkranz, S.; Osborn, R.; Chmaissem, O.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 10, 104513, 19.09.2014.

Research output: Contribution to journalArticle

Allred, JM, Taddei, KM, Bugaris, DE, Avci, S, Chung, DY, Claus, H, Dela Cruz, C, Kanatzidis, MG, Rosenkranz, S, Osborn, R & Chmaissem, O 2014, 'Coincident structural and magnetic order in BaFe2(As1-x Px)2 revealed by high-resolution neutron diffraction', Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 10, 104513. https://doi.org/10.1103/PhysRevB.90.104513
Allred, J. M. ; Taddei, K. M. ; Bugaris, D. E. ; Avci, S. ; Chung, D. Y. ; Claus, H. ; Dela Cruz, C. ; Kanatzidis, Mercouri G ; Rosenkranz, S. ; Osborn, R. ; Chmaissem, O. / Coincident structural and magnetic order in BaFe2(As1-x Px)2 revealed by high-resolution neutron diffraction. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 10.
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