Molecular quantum magnetism in LiZn 2 Mo 3 O 8

M. Mourigal; W. T. Fuhrman; J. P. Sheckelton; A. Wartelle; J. A. Rodriguez-Rivera; D. L. Abernathy; T. M. McQueen; C. L. Broholm

doi:10.1103/PhysRevLett.112.027202

Molecular quantum magnetism in LiZn 2 Mo 3 O 8

M. Mourigal, W. T. Fuhrman, J. P. Sheckelton, A. Wartelle, J. A. Rodriguez-Rivera, D. L. Abernathy, T. M. McQueen, C. L. Broholm

Direct Geometry

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Abstract

Inelastic neutron scattering at low temperatures T≤30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin-1/2 Mo3O13 molecules. Apparently gapless (Δ<0.2 meV) and extending at least up to 2.5 meV, the low-energy magnetic scattering cross section is surprisingly broad in momentum space and involves one-third of the spins present above 100 K. The data are compatible with the presence of valence bonds involving nearest-neighbor and next-nearest-neighbor spins forming a disordered or dynamic state.

Original language	English
Article number	027202
Journal	Physical Review Letters
Volume	112
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.112.027202
State	Published - Jan 15 2014

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title = "Molecular quantum magnetism in LiZn 2 Mo 3 O 8",

abstract = "Inelastic neutron scattering at low temperatures T≤30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin-1/2 Mo3O13 molecules. Apparently gapless (Δ<0.2 meV) and extending at least up to 2.5 meV, the low-energy magnetic scattering cross section is surprisingly broad in momentum space and involves one-third of the spins present above 100 K. The data are compatible with the presence of valence bonds involving nearest-neighbor and next-nearest-neighbor spins forming a disordered or dynamic state.",

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AU - Mourigal, M.

AU - Fuhrman, W. T.

AU - Sheckelton, J. P.

AU - Wartelle, A.

AU - Rodriguez-Rivera, J. A.

AU - Abernathy, D. L.

AU - McQueen, T. M.

AU - Broholm, C. L.

PY - 2014/1/15

Y1 - 2014/1/15

N2 - Inelastic neutron scattering at low temperatures T≤30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin-1/2 Mo3O13 molecules. Apparently gapless (Δ<0.2 meV) and extending at least up to 2.5 meV, the low-energy magnetic scattering cross section is surprisingly broad in momentum space and involves one-third of the spins present above 100 K. The data are compatible with the presence of valence bonds involving nearest-neighbor and next-nearest-neighbor spins forming a disordered or dynamic state.

AB - Inelastic neutron scattering at low temperatures T≤30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin-1/2 Mo3O13 molecules. Apparently gapless (Δ<0.2 meV) and extending at least up to 2.5 meV, the low-energy magnetic scattering cross section is surprisingly broad in momentum space and involves one-third of the spins present above 100 K. The data are compatible with the presence of valence bonds involving nearest-neighbor and next-nearest-neighbor spins forming a disordered or dynamic state.

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Molecular quantum magnetism in LiZn 2 Mo 3 O 8

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