Uniaxial pressure dependencies of the phase boundary of TlCuCl3
N. Johannsen, A. Oosawa, H. Tanaka, A. Vasiliev, T. Lorenz
Abstract
We present a thermal expansion and magnetostriction study of TlCuCl3, 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 185 GPa depending on the direction of uniaxial pressure.
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