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 · Mon Sep 28 00:00:00 EDT 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 Laboratory (ANL), Argonne, IL (United States); Rutherford Appleton Lab., Didcot (United Kingdom)

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

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

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1356619

Alternate ID(s):: OSTI ID: 1222240

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

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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References (16)

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Structural, magnetic, and superconducting properties of Ba $_{1 - x}$ Na $_{x}$ Fe $_{2}$ As $_{2}$ Avci, S.; Allred, J. M.; Chmaissem, O. Physical Review B, Vol. 88, Issue 9 https://doi.org/10.1103/PhysRevB.88.094510	journal	September 2013
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Coincident structural and magnetic order in ${BaFe}_{2} {({As}_{1 - x} P_{x})}_{2}$ revealed by high-resolution neutron diffraction Allred, J. M.; Taddei, K. M.; Bugaris, D. E. Physical Review B, Vol. 90, Issue 10 https://doi.org/10.1103/PhysRevB.90.104513	journal	September 2014
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Electronic Properties and Fermi Surface for New Layered High-Temperature Superconductors CaAFe4As4 (A = K, Rb, and Cs): FLAPW-GGA Calculations Suetin, D. V.; Shein, I. R. Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 6 https://doi.org/10.1007/s10948-017-4404-y	journal	November 2017
Double-Q spin-density wave in iron arsenide superconductors Allred, J. M.; Taddei, K. M.; Bugaris, D. E. Nature Physics, Vol. 12, Issue 5 https://doi.org/10.1038/nphys3629	journal	January 2016
Strong spin resonance mode associated with suppression of soft magnetic ordering in hole-doped Ba1-xNaxFe2As2 Waßer, Florian; Park, Jitae T.; Aswartham, Saicharan npj Quantum Materials, Vol. 4, Issue 1 https://doi.org/10.1038/s41535-019-0198-4	journal	December 2019
Strain tuning and anisotropic spin correlations in iron-based systems Willa, Roland; Fritz, Max; Schmalian, Jörg Physical Review B, Vol. 100, Issue 8 https://doi.org/10.1103/physrevb.100.085106	journal	August 2019
Experimental investigation of the suppressed superconducting gap and double-resonance mode in ${Ba}_{1 - x} K_{x} {Fe}_{2} {As}_{2}$ Ideta, S.; Murai, N.; Nakajima, M. Physical Review B, Vol. 100, Issue 23 https://doi.org/10.1103/physrevb.100.235135	journal	December 2019
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
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