Spin Dynamics in an Ordered Stripe Phase

J. M. Tranquada; P. Wochner; D. J. Buttrey

doi:10.1103/PhysRevLett.79.2133

Spin Dynamics in an Ordered Stripe Phase

Superconductivity 2009-10-28 v2

Authors: J. M. Tranquada , P. Wochner , D. J. Buttrey

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Inelastic neutron scattering has been used to measure the low-energy spin excitations in the ordered charge-stripe phase of La(2)NiO(4+d) with d=0.133. Spin-wave-like excitations disperse away from the incommensurate magnetic superlattice points with a velocity ~60% of that in the d=0 compound. Incommensurate inelastic peaks remain well-resolved up to at least twice the magnetic ordering temperature. Paramagnetic scattering from a d=0.105 sample, which has a N\'eel-ordered ground state, shows anomalies suggestive of incipient stripe correlations. Similarities between these results and measurements on superconducting cuprates are discussed.

Keywords

spin excitations in condensed matter charge ordering frustrated magnetism

Cite

@article{arxiv.cond-mat/9612007,
  title  = {Spin Dynamics in an Ordered Stripe Phase},
  author = {J. M. Tranquada and P. Wochner and D. J. Buttrey},
  journal= {arXiv preprint arXiv:cond-mat/9612007},
  year   = {2009}
}

Comments

5 pp, 2 col., REVTeX, 4 epsf figures embedded with psfig; Abstract and introduction have been revised

Related papers

View all related →