Understanding Paramagnetic Spin Correlations in the Spin-Liquid Pyrochlore Tb2Ti2O7

Ying-Jer Kao; Matthew Enjalran; Adrian Del Maestro; Hamid R. Molavian; Michel J. P. Gingras

doi:10.1103/PhysRevB.68.172407

Understanding Paramagnetic Spin Correlations in the Spin-Liquid Pyrochlore Tb2Ti2O7

Disordered Systems and Neural Networks 2007-05-23 v3 Statistical Mechanics

Authors: Ying-Jer Kao , Matthew Enjalran , Adrian Del Maestro , Hamid R. Molavian , Michel J. P. Gingras

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Abstract

Recent elastic and inelastic neutron scattering studies of the highly frustrated pyrochlore antiferromagnet Tb2Ti2O7 have shown some very intriguing features that cannot be modeled by the local <111> classical Ising model, naively expected to describe this system at low temperatures. Using the random phase approximation to take into account fluctuations between the ground state doublet and the first excited doublet, we successfully describe the elastic neutron scattering pattern and dispersion relations in Tb2Ti2O7, semi-quantitatively consistent with experimental observations.

Keywords

spin excitations in condensed matter frustrated magnetism nuclear scattering

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@article{arxiv.cond-mat/0207270,
  title  = {Understanding Paramagnetic Spin Correlations in the Spin-Liquid Pyrochlore Tb2Ti2O7},
  author = {Ying-Jer Kao and Matthew Enjalran and Adrian Del Maestro and Hamid R. Molavian and Michel J. P. Gingras},
  journal= {arXiv preprint arXiv:cond-mat/0207270},
  year   = {2007}
}

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revtex4, 4 pages, 1 Color+ 2 BW figures

Understanding Paramagnetic Spin Correlations in the Spin-Liquid Pyrochlore Tb2Ti2O7

Abstract

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