Effect of pressure on the quantum spin ladder material IPA-CuCl3

Tao Hong; V. O. Garlea; A. Zheludev; J. Fernandez-Baca; H. Manaka; S. Chang; J. B. Leao; S. J. Poulton

doi:10.1103/PhysRevB.78.224409

Effect of pressure on the quantum spin ladder material IPA-CuCl3

Strongly Correlated Electrons 2008-12-10 v1 Materials Science

Authors: Tao Hong , V. O. Garlea , A. Zheludev , J. Fernandez-Baca , H. Manaka , S. Chang , J. B. Leao , S. J. Poulton

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Abstract

Inelastic neutron scattering and bulk magnetic susceptibility studies of the quantum S=1/2 spin ladder system IPA-CuCl3 are performed under hydrostatic pressure. The pressure dependence of the spin gap $\Delta$ is determined. At $P=1.5$ GPa it is reduced to $\Delta=0.79$ meV from $\Delta=1.17$ meV at ambient pressure. The results allow us to predict a soft-mode quantum phase transition in this system at P $_\mathrm{c}\sim 4$ GPa. The measurements are complicated by a proximity of a structural phase transition that leads to a deterioration of the sample.

Keywords

high-pressure phase transitions spin excitations in condensed matter crystal structure of iron alloys

Cite

@article{arxiv.0809.1254,
  title  = {Effect of pressure on the quantum spin ladder material IPA-CuCl3},
  author = {Tao Hong and V. O. Garlea and A. Zheludev and J. Fernandez-Baca and H. Manaka and S. Chang and J. B. Leao and S. J. Poulton},
  journal= {arXiv preprint arXiv:0809.1254},
  year   = {2008}
}

Comments

5 pages, 4 figures

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