Pressure-Induced Successive Magnetic Phase Transitions in the Spin Gap System TlCuCl$_3$

A. Oosawa; K. Kakurai; T. Osakabe; M. Nakamura; M. Takeda; H. Tanaka

doi:10.1143/JPSJ.73.1446

Pressure-Induced Successive Magnetic Phase Transitions in the Spin Gap System TlCuCl$_3$

Strongly Correlated Electrons 2009-11-10 v1

Authors: A. Oosawa , K. Kakurai , T. Osakabe , M. Nakamura , M. Takeda , H. Tanaka

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Abstract

Under the hydrostatic pressure $P=1.48$ GPa, polarized neutron elastic scattering experiments have been carried out on the coupled spin dimer system TlCuCl $_3$ with the gapped ground state at ambient pressure. Pressure-induced magnetic ordering occurs at the transition temperature $T_{\rm N}=16.9$ K. As in the field-induced and impurity-induced magnetic ordered phases, the ordered moments lie in the $a-c$ plane just below $T_{\rm N}$ . An additional spin reorientation (SR) phase transition was observed at $T_{\rm SR}=10$ K, where the ordered moments start to incline toward the b-axis. The temperature variations of the direction and the magnitude of the ordered moments were also investigated.

Keywords

magnetic phase transitions spin gap system TlCuCl3 hydrostatic pressure neutron elastic scattering spin reorientation

Cite

@article{arxiv.cond-mat/0404273,
  title  = {Pressure-Induced Successive Magnetic Phase Transitions in the Spin Gap System TlCuCl$_3$},
  author = {A. Oosawa and K. Kakurai and T. Osakabe and M. Nakamura and M. Takeda and H. Tanaka},
  journal= {arXiv preprint arXiv:cond-mat/0404273},
  year   = {2009}
}

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5 pages, 4 figures, jpsj2.cls

Pressure-Induced Successive Magnetic Phase Transitions in the Spin Gap System TlCuCl$_3$

Abstract

Keywords

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