Magnetoelastic coupling in the phase diagram of Ba1-xK xFe2As2 as seen via neutron diffraction

S. Avci; O. Chmaissem; E. A. Goremychkin; S. Rosenkranz; J. P. Castellan; D. Y. Chung; I. S. Todorov; J. A. Schlueter; H. Claus; M. G. Kanatzidis; A. Daoud-Aladine; D. Khalyavin; R. Osborn

doi:10.1103/PhysRevB.83.172503

Magnetoelastic coupling in the phase diagram of Ba_1-xK _xFe₂As₂ as seen via neutron diffraction

S. Avci^*, O. Chmaissem, E. A. Goremychkin, S. Rosenkranz, J. P. Castellan, D. Y. Chung, I. S. Todorov, J. A. Schlueter, H. Claus, M. G. Kanatzidis, A. Daoud-Aladine, D. Khalyavin, R. Osborn

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

87 Citations (Scopus)

Abstract

We report a high resolution neutron diffraction investigation of the coupling of structural and magnetic transitions in Ba_1-xK _xFe₂As₂. The tetragonal-orthorhombic and antiferromagnetic transitions are suppressed with potassium doping, falling to zero at x Fe_1-xCo_x)₂As₂, the two transitions are first order and coincident over the entire phase diagram, with a biquadratic coupling of the two order parameters. The phase diagram is refined showing that the onset of superconductivity is at x=0.133 with all three phases coexisting until x≤0.24.

Original language	English
Article number	172503
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.83.172503
Publication status	Published - 27 May 2011
Externally published	Yes

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Avci, S., Chmaissem, O., Goremychkin, E. A., Rosenkranz, S., Castellan, J. P., Chung, D. Y., Todorov, I. S., Schlueter, J. A., Claus, H., Kanatzidis, M. G., Daoud-Aladine, A., Khalyavin, D., & Osborn, R. (2011). Magnetoelastic coupling in the phase diagram of Ba_1-xK _xFe₂As₂ as seen via neutron diffraction. Physical Review B - Condensed Matter and Materials Physics, 83(17), Article 172503. https://doi.org/10.1103/PhysRevB.83.172503

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title = "Magnetoelastic coupling in the phase diagram of Ba1-xK xFe2As2 as seen via neutron diffraction",

abstract = "We report a high resolution neutron diffraction investigation of the coupling of structural and magnetic transitions in Ba1-xK xFe2As2. The tetragonal-orthorhombic and antiferromagnetic transitions are suppressed with potassium doping, falling to zero at x Fe1-xCox)2As2, the two transitions are first order and coincident over the entire phase diagram, with a biquadratic coupling of the two order parameters. The phase diagram is refined showing that the onset of superconductivity is at x=0.133 with all three phases coexisting until x≤0.24.",

author = "S. Avci and O. Chmaissem and Goremychkin, {E. A.} and S. Rosenkranz and Castellan, {J. P.} and Chung, {D. Y.} and Todorov, {I. S.} and Schlueter, {J. A.} and H. Claus and Kanatzidis, {M. G.} and A. Daoud-Aladine and D. Khalyavin and R. Osborn",

year = "2011",

month = may,

day = "27",

doi = "10.1103/PhysRevB.83.172503",

language = "English",

volume = "83",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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Avci, S, Chmaissem, O, Goremychkin, EA, Rosenkranz, S, Castellan, JP, Chung, DY, Todorov, IS, Schlueter, JA, Claus, H, Kanatzidis, MG, Daoud-Aladine, A, Khalyavin, D & Osborn, R 2011, 'Magnetoelastic coupling in the phase diagram of Ba_1-xK _xFe₂As₂ as seen via neutron diffraction', Physical Review B - Condensed Matter and Materials Physics, vol. 83, no. 17, 172503. https://doi.org/10.1103/PhysRevB.83.172503

TY - JOUR

T1 - Magnetoelastic coupling in the phase diagram of Ba1-xK xFe2As2 as seen via neutron diffraction

AU - Avci, S.

AU - Chmaissem, O.

AU - Goremychkin, E. A.

AU - Rosenkranz, S.

AU - Castellan, J. P.

AU - Chung, D. Y.

AU - Todorov, I. S.

AU - Schlueter, J. A.

AU - Claus, H.

AU - Kanatzidis, M. G.

AU - Daoud-Aladine, A.

AU - Khalyavin, D.

AU - Osborn, R.

PY - 2011/5/27

Y1 - 2011/5/27

N2 - We report a high resolution neutron diffraction investigation of the coupling of structural and magnetic transitions in Ba1-xK xFe2As2. The tetragonal-orthorhombic and antiferromagnetic transitions are suppressed with potassium doping, falling to zero at x Fe1-xCox)2As2, the two transitions are first order and coincident over the entire phase diagram, with a biquadratic coupling of the two order parameters. The phase diagram is refined showing that the onset of superconductivity is at x=0.133 with all three phases coexisting until x≤0.24.

AB - We report a high resolution neutron diffraction investigation of the coupling of structural and magnetic transitions in Ba1-xK xFe2As2. The tetragonal-orthorhombic and antiferromagnetic transitions are suppressed with potassium doping, falling to zero at x Fe1-xCox)2As2, the two transitions are first order and coincident over the entire phase diagram, with a biquadratic coupling of the two order parameters. The phase diagram is refined showing that the onset of superconductivity is at x=0.133 with all three phases coexisting until x≤0.24.

UR - http://www.scopus.com/inward/record.url?scp=79961112990&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.83.172503

DO - 10.1103/PhysRevB.83.172503

M3 - Article

AN - SCOPUS:79961112990

SN - 1098-0121

VL - 83

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 172503

ER -

Magnetoelastic coupling in the phase diagram of Ba_1-xK _xFe₂As₂ as seen via neutron diffraction

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