Competing magnetic ground states in nonsuperconducting Ba(Fe 1-xCrx)2As2 as seen via neutron diffraction

K. Marty; A. D. Christianson; C. H. Wang; M. Matsuda; H. Cao; L. H. Vanbebber; J. L. Zarestky; D. J. Singh; A. S. Sefat; M. D. Lumsden

doi:10.1103/PhysRevB.83.060509

Competing magnetic ground states in nonsuperconducting Ba(Fe _1-xCr_x)₂As₂ as seen via neutron diffraction

K. Marty, A. D. Christianson, C. H. Wang, M. Matsuda, H. Cao, L. H. Vanbebber, J. L. Zarestky, D. J. Singh, A. S. Sefat, M. D. Lumsden

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Abstract

We present neutron diffraction measurements on single-crystal samples of nonsuperconducting Ba(Fe_1-xCr_x)₂As₂ as a function of Cr doping for 0≤x≤0.47. The average spin-density-wave moment is independent of concentration for x≤0.2 and decreases rapidly for x≥0.3. For concentrations in excess of 30% chromium, we find a new competing magnetic phase consistent with G-type antiferromagnetism which rapidly becomes the dominant magnetic ground state. Strong magnetism is observed for all concentrations measured, naturally explaining the absence of superconductivity in the Cr-doped materials.

Original language	English
Article number	060509
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.83.060509
State	Published - Feb 11 2011

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Marty, K., Christianson, A. D., Wang, C. H., Matsuda, M., Cao, H., Vanbebber, L. H., Zarestky, J. L., Singh, D. J., Sefat, A. S., & Lumsden, M. D. (2011). Competing magnetic ground states in nonsuperconducting Ba(Fe _1-xCr_x)₂As₂ as seen via neutron diffraction. Physical Review B - Condensed Matter and Materials Physics, 83(6), Article 060509. https://doi.org/10.1103/PhysRevB.83.060509

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title = "Competing magnetic ground states in nonsuperconducting Ba(Fe 1-xCrx)2As2 as seen via neutron diffraction",

abstract = "We present neutron diffraction measurements on single-crystal samples of nonsuperconducting Ba(Fe1-xCrx)2As2 as a function of Cr doping for 0≤x≤0.47. The average spin-density-wave moment is independent of concentration for x≤0.2 and decreases rapidly for x≥0.3. For concentrations in excess of 30% chromium, we find a new competing magnetic phase consistent with G-type antiferromagnetism which rapidly becomes the dominant magnetic ground state. Strong magnetism is observed for all concentrations measured, naturally explaining the absence of superconductivity in the Cr-doped materials.",

author = "K. Marty and Christianson, {A. D.} and Wang, {C. H.} and M. Matsuda and H. Cao and Vanbebber, {L. H.} and Zarestky, {J. L.} and Singh, {D. J.} and Sefat, {A. S.} and Lumsden, {M. D.}",

year = "2011",

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doi = "10.1103/PhysRevB.83.060509",

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AU - Marty, K.

AU - Christianson, A. D.

AU - Wang, C. H.

AU - Matsuda, M.

AU - Cao, H.

AU - Vanbebber, L. H.

AU - Zarestky, J. L.

AU - Singh, D. J.

AU - Sefat, A. S.

AU - Lumsden, M. D.

PY - 2011/2/11

Y1 - 2011/2/11

N2 - We present neutron diffraction measurements on single-crystal samples of nonsuperconducting Ba(Fe1-xCrx)2As2 as a function of Cr doping for 0≤x≤0.47. The average spin-density-wave moment is independent of concentration for x≤0.2 and decreases rapidly for x≥0.3. For concentrations in excess of 30% chromium, we find a new competing magnetic phase consistent with G-type antiferromagnetism which rapidly becomes the dominant magnetic ground state. Strong magnetism is observed for all concentrations measured, naturally explaining the absence of superconductivity in the Cr-doped materials.

AB - We present neutron diffraction measurements on single-crystal samples of nonsuperconducting Ba(Fe1-xCrx)2As2 as a function of Cr doping for 0≤x≤0.47. The average spin-density-wave moment is independent of concentration for x≤0.2 and decreases rapidly for x≥0.3. For concentrations in excess of 30% chromium, we find a new competing magnetic phase consistent with G-type antiferromagnetism which rapidly becomes the dominant magnetic ground state. Strong magnetism is observed for all concentrations measured, naturally explaining the absence of superconductivity in the Cr-doped materials.

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DO - 10.1103/PhysRevB.83.060509

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JO - Physical Review B - Condensed Matter and Materials Physics

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ER -

Competing magnetic ground states in nonsuperconducting Ba(Fe _1-xCr_x)₂As₂ as seen via neutron diffraction

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