Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering

V.O. Garlea; S.E. Nagler; J.L. Zarestky; C. Strassis; D. Vaknin; P. Kogerler; D.F. McMorrow; C. Niedermayer; D.A. Tennant; B. Lake; Y. Qiu; M. Exler; J. Schnack; M. Luban

doi:10.1103/PhysRevB.73.024414

Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering

V.O. Garlea, S.E. Nagler, J.L. Zarestky, C. Strassis, D. Vaknin, P. Kogerler, D.F. McMorrow, C. Niedermayer, D.A. Tennant, B. Lake, Y. Qiu, M. Exler, J. Schnack, M. Luban

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Abstract

Low temperature inelastic neutron scattering studies have been performed to characterize the low energy magnetic excitation spectrum of the magnetic nanomolecule {Mo(72)Fe(30)}. This unique highly symmetric cluster features spin frustration and is one of the largest discrete magnetic molecules studied to date by inelastic neutron scattering. The 30 s=5/2 Fe(III) ions, embedded in a spherical polyoxomolybdate molecule, occupy the vertices of an icosidodecahedron and are coupled via nearest-neighbor antiferromagnetic interactions. The overall energy scale of the excitation and the gross features of the temperature dependence of the observed neutron scattering are explained by a quantum model of the frustrated spin cluster. However, no satisfactory theoretical explanation is yet available for the observed magnetic field dependence.

Original language	English
Journal	Physical Review B Condensed Matter
Volume	73
Issue number	2
Pages (from-to)	024414
Number of pages	5
ISSN	0163-1829
DOIs	https://doi.org/10.1103/PhysRevB.73.024414
Publication status	Published - 2006

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Garlea, V. O., Nagler, S. E., Zarestky, J. L., Strassis, C., Vaknin, D., Kogerler, P., McMorrow, D. F., Niedermayer, C., Tennant, D. A., Lake, B., Qiu, Y., Exler, M., Schnack, J., & Luban, M. (2006). Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering. Physical Review B Condensed Matter, 73(2), 024414. https://doi.org/10.1103/PhysRevB.73.024414

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abstract = "Low temperature inelastic neutron scattering studies have been performed to characterize the low energy magnetic excitation spectrum of the magnetic nanomolecule {Mo(72)Fe(30)}. This unique highly symmetric cluster features spin frustration and is one of the largest discrete magnetic molecules studied to date by inelastic neutron scattering. The 30 s=5/2 Fe(III) ions, embedded in a spherical polyoxomolybdate molecule, occupy the vertices of an icosidodecahedron and are coupled via nearest-neighbor antiferromagnetic interactions. The overall energy scale of the excitation and the gross features of the temperature dependence of the observed neutron scattering are explained by a quantum model of the frustrated spin cluster. However, no satisfactory theoretical explanation is yet available for the observed magnetic field dependence.",

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author = "V.O. Garlea and S.E. Nagler and J.L. Zarestky and C. Strassis and D. Vaknin and P. Kogerler and D.F. McMorrow and C. Niedermayer and D.A. Tennant and B. Lake and Y. Qiu and M. Exler and J. Schnack and M. Luban",

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Garlea, VO, Nagler, SE, Zarestky, JL, Strassis, C, Vaknin, D, Kogerler, P, McMorrow, DF, Niedermayer, C, Tennant, DA, Lake, B, Qiu, Y, Exler, M, Schnack, J & Luban, M 2006, 'Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering', Physical Review B Condensed Matter, vol. 73, no. 2, pp. 024414. https://doi.org/10.1103/PhysRevB.73.024414

TY - JOUR

T1 - Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering

AU - Garlea, V.O.

AU - Nagler, S.E.

AU - Zarestky, J.L.

AU - Strassis, C.

AU - Vaknin, D.

AU - Kogerler, P.

AU - McMorrow, D.F.

AU - Niedermayer, C.

AU - Tennant, D.A.

AU - Lake, B.

AU - Qiu, Y.

AU - Exler, M.

AU - Schnack, J.

AU - Luban, M.

PY - 2006

Y1 - 2006

N2 - Low temperature inelastic neutron scattering studies have been performed to characterize the low energy magnetic excitation spectrum of the magnetic nanomolecule {Mo(72)Fe(30)}. This unique highly symmetric cluster features spin frustration and is one of the largest discrete magnetic molecules studied to date by inelastic neutron scattering. The 30 s=5/2 Fe(III) ions, embedded in a spherical polyoxomolybdate molecule, occupy the vertices of an icosidodecahedron and are coupled via nearest-neighbor antiferromagnetic interactions. The overall energy scale of the excitation and the gross features of the temperature dependence of the observed neutron scattering are explained by a quantum model of the frustrated spin cluster. However, no satisfactory theoretical explanation is yet available for the observed magnetic field dependence.

AB - Low temperature inelastic neutron scattering studies have been performed to characterize the low energy magnetic excitation spectrum of the magnetic nanomolecule {Mo(72)Fe(30)}. This unique highly symmetric cluster features spin frustration and is one of the largest discrete magnetic molecules studied to date by inelastic neutron scattering. The 30 s=5/2 Fe(III) ions, embedded in a spherical polyoxomolybdate molecule, occupy the vertices of an icosidodecahedron and are coupled via nearest-neighbor antiferromagnetic interactions. The overall energy scale of the excitation and the gross features of the temperature dependence of the observed neutron scattering are explained by a quantum model of the frustrated spin cluster. However, no satisfactory theoretical explanation is yet available for the observed magnetic field dependence.

KW - Energiteknologier på vej

U2 - 10.1103/PhysRevB.73.024414

DO - 10.1103/PhysRevB.73.024414

M3 - Journal article

SN - 2469-9950

VL - 73

SP - 024414

JO - Physical Review B

JF - Physical Review B

IS - 2

ER -

Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering

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