Molecular Quantum Magnetism in LiZn2Mo3O8

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 LiZn2Mo3O8

Strongly Correlated Electrons 2014-02-26 v2 Materials Science

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

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Inelastic neutron scattering for temperatures below 30 K from a powder of LiZn2Mo3O8 demonstrates this triangular-lattice antiferromagnet hosts collective magnetic excitations from spin 1/2 Mo3O13 molecules. Apparently gapless (\Delta < 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.

Keywords

spin excitations in condensed matter magnetic materials and spin systems frustrated magnetism

Cite

@article{arxiv.1309.1165,
  title  = {Molecular Quantum Magnetism in LiZn2Mo3O8},
  author = {M. Mourigal and W. T. Fuhrman and J. P. Sheckelton and A. Wartelle and J. A. Rodriguez-Rivera and D. L. Abernathy and T. M. McQueen and C. L. Broholm},
  journal= {arXiv preprint arXiv:1309.1165},
  year   = {2014}
}

Comments

Main text: 5 pages, 4 figures. Supplementary materials: 4 pages, 4 figures, 2 tables. Accepted to PRL

Molecular Quantum Magnetism in LiZn2Mo3O8

Abstract

Keywords

Cite

Comments

Related papers