Two-dimensional magnetic interactions in LaFeAsO

M. Ramazanoglu; J. Lamsal; G. S. Tucker; J. Q. Yan; S. Calder; T. Guidi; T. Perring; R. W. McCallum; T. A. Lograsso; A. Kreyssig; A. I. Goldman; R. J. McQueeney

doi:10.1103/PhysRevB.87.140509

Two-dimensional magnetic interactions in LaFeAsO

M. Ramazanoglu^*, J. Lamsal, G. S. Tucker, J. Q. Yan, S. Calder, T. Guidi, T. Perring, R. W. McCallum, T. A. Lograsso, A. Kreyssig, A. I. Goldman, R. J. McQueeney

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Araştırma sonucu: Dergiye katkı › Makale › bilirkişi

19 Atıf (Scopus)

Özet

Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two dimensional. Spin-wave velocities within the Fe layer and the magnitude of the spin gap are similar to the AFe₂As₂ based materials. However, the ratio of interlayer and intralayer exchange is found to be less than ∼10^-4 in LaFeAsO, very similar to the cuprates, and ∼100 times smaller than that found in AFe₂As₂ compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak three-dimensional interactions may limit the maximum attainable superconducting T_c.

Orijinal dil	İngilizce
Makale numarası	140509
Dergi	Physical Review B - Condensed Matter and Materials Physics
Hacim	87
Basın numarası	14
DOI'lar	https://doi.org/10.1103/PhysRevB.87.140509
Yayın durumu	Yayınlandı - 30 Nis 2013
Harici olarak yayınlandı	Evet

Belgeye Erişim

10.1103/PhysRevB.87.140509

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Alıntı Yap

@article{358b0ead3f874f5895c5466213b12ce7,

title = "Two-dimensional magnetic interactions in LaFeAsO",

abstract = "Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two dimensional. Spin-wave velocities within the Fe layer and the magnitude of the spin gap are similar to the AFe2As2 based materials. However, the ratio of interlayer and intralayer exchange is found to be less than ∼10-4 in LaFeAsO, very similar to the cuprates, and ∼100 times smaller than that found in AFe2As2 compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak three-dimensional interactions may limit the maximum attainable superconducting Tc.",

author = "M. Ramazanoglu and J. Lamsal and Tucker, {G. S.} and Yan, {J. Q.} and S. Calder and T. Guidi and T. Perring and McCallum, {R. W.} and Lograsso, {T. A.} and A. Kreyssig and Goldman, {A. I.} and McQueeney, {R. J.}",

year = "2013",

month = apr,

day = "30",

doi = "10.1103/PhysRevB.87.140509",

language = "English",

volume = "87",

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

issn = "1098-0121",

publisher = "American Physical Society",

number = "14",

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TY - JOUR

T1 - Two-dimensional magnetic interactions in LaFeAsO

AU - Ramazanoglu, M.

AU - Lamsal, J.

AU - Tucker, G. S.

AU - Yan, J. Q.

AU - Calder, S.

AU - Guidi, T.

AU - Perring, T.

AU - McCallum, R. W.

AU - Lograsso, T. A.

AU - Kreyssig, A.

AU - Goldman, A. I.

AU - McQueeney, R. J.

PY - 2013/4/30

Y1 - 2013/4/30

N2 - Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two dimensional. Spin-wave velocities within the Fe layer and the magnitude of the spin gap are similar to the AFe2As2 based materials. However, the ratio of interlayer and intralayer exchange is found to be less than ∼10-4 in LaFeAsO, very similar to the cuprates, and ∼100 times smaller than that found in AFe2As2 compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak three-dimensional interactions may limit the maximum attainable superconducting Tc.

AB - Inelastic neutron scattering measurements demonstrate that the magnetic interactions in antiferromagnetic LaFeAsO are two dimensional. Spin-wave velocities within the Fe layer and the magnitude of the spin gap are similar to the AFe2As2 based materials. However, the ratio of interlayer and intralayer exchange is found to be less than ∼10-4 in LaFeAsO, very similar to the cuprates, and ∼100 times smaller than that found in AFe2As2 compounds. The results suggest that the effective dimensionality of the magnetic system is highly variable in the parent compounds of the iron arsenides and weak three-dimensional interactions may limit the maximum attainable superconducting Tc.

UR - http://www.scopus.com/inward/record.url?scp=84876993385&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.87.140509

DO - 10.1103/PhysRevB.87.140509

M3 - Article

AN - SCOPUS:84876993385

SN - 1098-0121

VL - 87

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

M1 - 140509

ER -

Two-dimensional magnetic interactions in LaFeAsO

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