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Uniaxial pressure dependencies of the phase boundary of TlCuCl_3

N. Johannsen·A. Oosawa·H. Tanaka·A. Vasiliev·T. Lorenz
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Abstract

We present a thermal expansion and magnetostriction study of TlCuCl_3, which shows a magnetic-field induced transition from a spin gap phase to a Neel ordered phase. Using Ehrenfest relations we derive huge and strongly anisotropic uniaxial pressure dependencies of the respective phase boundary, e.g. the transition field changes by about $\pm 185$ GPa depending on the direction of uniaxial pressure.

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N. Johannsen, A. Oosawa, H. Tanaka, A. Vasiliev, T. Lorenz. 2005-07-25. Uniaxial pressure dependencies of the phase boundary of TlCuCl_3. https://doi.org/10.1016/j.physb.2006.01.526

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