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28 March 2024
 
  » arxiv » cond-mat/0404273

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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 ;
Date 13 Apr 2004
Subject Strongly Correlated Electrons | cond-mat.str-el
AbstractUnder 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 $T_{ m N}=16.9$ K. As in the field-induced and impurity-induced magnetic ordered phases, the ordered moments lie in the $a-c$ plane just below $T_{ m N}$. An additional spin reorientation (SR) phase transition was observed at $T_{ m SR}=10$ 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.
Source arXiv, cond-mat/0404273
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