Unusual criticality of Cu2Te2O5Br2 under pressure
arXiv:cond-mat/0501524 · doi:10.1016/j.jmmm.2004.11.300
Abstract
We present measurements of the magnetic susceptibility chi(T) on Cu2Te2O5Br2 under externally applied pressure. From our data we extract the pressure response of the antiferromagnetic phase transition at T0 = 11.6 K and of the overall magnetic coupling strength. Our experiments indicate that with pressure the overall magnetic coupling strength increases by about 25% with applied pressure of only 8 kbar. In contrast, the phase transition temperature T0 is significantly suppressed and not observable anymore at a pressure of already 8.2 kbar.
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Cited by in corpus (5)
- Investigation of the oxohalogenide Cu4Te5O12Cl4 with weakly coupled Cu(II) tetrahedra
- Anomalous frequency and intensity scaling of collective and local modes in a coupled spin tetrahedron system
- Persistence of singlet fluctuations in the coupled spin tetrahedra system Cu2Te2O5Br2 revealed by high-field magnetization and 79Br NQR - 125Te NMR
- The effect of externally applied pressure on the magnetic behavior of Cu2Te2O5(BrxCl{1-x})2
- Microscopic model for the novel frustrated Cu(II)-spin tetrahedron-based Cu4Te5O12X4 (X=Cl, Br) systems