Field Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb2Ti2O7

K. C. Rule; J. P. C. Ruff; B. D. Gaulin; S. R. Dunsiger; J. S. Gardner; J. P. Clancy; M. J. Lewis; H. A. Dabkowska; I Mirebeau; P. Manuel; Y. Qiu; J. R. D. Copley

doi:10.1103/PhysRevLett.96.177201

Field Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb2Ti2O7

Strongly Correlated Electrons 2009-11-11 v1

Authors: K. C. Rule , J. P. C. Ruff , B. D. Gaulin , S. R. Dunsiger , J. S. Gardner , J. P. Clancy , M. J. Lewis , H. A. Dabkowska , I Mirebeau , P. Manuel , Y. Qiu , J. R. D. Copley

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

High resolution time-of-flight neutron scattering measurements on Tb2Ti2O7 reveal a rich low temperature phase diagram in the presence of a magnetic field applied along [110]. In zero field at T=0.4 K, terbium titanate is a highly correlated cooperative paramagnet with disordered spins residing on a pyrochlore lattice of corner-sharing tetrahedra. Application of a small field condenses much of the magnetic diffuse scattering, characteristic of the disordered spins, into a new Bragg peak characteristic of a polarized paramagnet. At higher fields, a magnetically ordered phase is induced, which supports spin wave excitations indicative of continuous, rather than Ising-like spin degrees of freedom.

Keywords

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

Cite

@article{arxiv.cond-mat/0601715,
  title  = {Field Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb2Ti2O7},
  author = {K. C. Rule and J. P. C. Ruff and B. D. Gaulin and S. R. Dunsiger and J. S. Gardner and J. P. Clancy and M. J. Lewis and H. A. Dabkowska and I Mirebeau and P. Manuel and Y. Qiu and J. R. D. Copley},
  journal= {arXiv preprint arXiv:cond-mat/0601715},
  year   = {2009}
}

Comments

5 pages, 4 figures, submitted to PRL

Field Induced Order and Spin Waves in the Pyrochlore Antiferromagnet Tb2Ti2O7

Abstract

Keywords

Cite

Comments

Related papers