Tetragonal magnetic phase in Ba1-xKxFe2As2 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, M. G.; Rosenkranz, S.; Osborn, R.; Chmaissem, O.

doi:10.1103/PhysRevB.92.094515

Title: Tetragonal magnetic phase in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ from x-ray and neutron diffraction

Journal Article · 27 September 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI: https://doi.org/10.1103/PhysRevB.92.094515 · OSTI ID:1356619

Allred, J. M. ^[1]; Avci, S. ^[2]; Chung, D. Y. ^[1]; Claus, H. ^[1]; Khalyavin, D. D. ^[3]; Manuel, P. ^[3]; Taddei, K. M. ^[4]; Kanatzidis, M. G. ^[5]; Rosenkranz, S. ^[1]; Osborn, R. ^[1]; Chmaissem, O. ^[4]

Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Afyon Kocatepe Univ., Afyon (Turkey). Dept. of Materials Science and Engineering
Rutherford Appleton Lab., Didcot (United Kingdom). ISIS Pulsed Neutron and Muon Source
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northern Illinois Univ., DeKalb, IL (United States). Physics Dept.
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Northwestern Univ., Evanston, IL (United States). Dept. of Chemistry

In this paper, combined neutron and x-ray diffraction experiments demonstrate the formation of a low-temperature minority magnetic tetragonal phase in Ba_0.76K_0.24Fe₂As₂ in addition to the majority magnetic, orthorhombic phase. The coincident enhancement in the magnetic (1/2 1/2 1) peaks shows that this minority phase is of the same type that was observed in Ba_1-xNa_xFe₂As₂ (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. Finally, the observations suggest that in this regime the energy levels of the C₂ and C₄ symmetric magnetic phases are very close.

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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States); Rutherford Appleton Lab., Didcot (United Kingdom)

Sponsoring Organization:: Science and Technology Facilities Council (STFC) (United Kingdom); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Contributing Organization:: Afyon Kocatepe Univ., Afyon (Turkey); Northern Illinois Univ., DeKalb, IL (United States); Northwestern Univ., Evanston, IL (United States)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1356619

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 9 Vol. 92; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Spin reorientation driven by the interplay between spin-orbit coupling and Hund's rule coupling in iron pnictides Christensen, Morten H.; Kang, Jian; Andersen, Brian M. Physical Review B, Vol. 92, Issue 21 https://doi.org/10.1103/physrevb.92.214509	journal	December 2015
Spin anisotropy due to spin-orbit coupling in optimally hole-doped Ba 0.67 K 0.33 Fe 2 As 2 Song, Yu; Man, Haoran; Zhang, Rui Physical Review B, Vol. 94, Issue 21 https://doi.org/10.1103/physrevb.94.214516	journal	December 2016
Superconductivity and electronic fluctuations in Ba 1 − x K x Fe 2 As 2 studied by Raman scattering Wu, S. -F.; Richard, P.; Ding, H. Physical Review B, Vol. 95, Issue 8 https://doi.org/10.1103/physrevb.95.085125	journal	February 2017
Local breaking of fourfold rotational symmetry by short-range magnetic order in heavily overdoped Ba ( Fe 1 − x Cu x ) 2 As 2 Wang, Weiyi; Song, Yu; Hu, Ding Physical Review B, Vol. 96, Issue 16 https://doi.org/10.1103/physrevb.96.161106	journal	October 2017
NMR study of the new magnetic superconductor CaK ( Fe 0.951 Ni 0.049 ) 4 As 4 : Microscopic coexistence of the hedgehog spin-vortex crystal and superconductivity Ding, Q. -P.; Meier, W. R.; Böhmer, A. E. Physical Review B, Vol. 96, Issue 22 https://doi.org/10.1103/physrevb.96.220510	journal	December 2017
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Widespread orthorhombic fluctuations in the ( Sr , Na ) Fe 2 As 2 family of superconductors Frandsen, Benjamin A.; Taddei, Keith M.; Bugaris, Daniel E. Physical Review B, Vol. 98, Issue 18 https://doi.org/10.1103/physrevb.98.180505	journal	November 2018
Preferred Magnetic Excitations in the Iron-Based Sr 1 − x Na x Fe 2 As 2 Superconductor Guo, Jianqing; Yue, Li; Iida, Kazuki Physical Review Letters, Vol. 122, Issue 1 https://doi.org/10.1103/physrevlett.122.017001	journal	January 2019
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Double-Q spin-density wave in iron arsenide superconductors Allred, J. M.; Taddei, K. M.; Bugaris, D. E. arXiv https://doi.org/10.48550/arxiv.1505.06175	text	January 2015
Strain tuning and anisotropic spin correlations in iron-based systems Willa, Roland; Fritz, Max; Schmalian, Jörg arXiv https://doi.org/10.48550/arxiv.1904.05583	text	January 2019
Strong Spin Resonance Mode associated with suppression of soft magnetic ordering in Hole-doped Ba1-xNaxFe2As2 Wasser, F.; Park, J. -T.; Aswartham, S. arXiv https://doi.org/10.48550/arxiv.1909.03046	text	January 2019

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Title: Tetragonal magnetic phase in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ from x-ray and neutron diffraction