Magnetic phase diagram of the strongly frustrated quantum spin chain system PbCuSO${}_4$(OH)${}_2$ in tilted magnetic fields

Abstract

We report the $\mathbf{H}-T$ phase diagram of $S=1/2$ strongly frustrated anisotropic spin chain material linarite PbCuSO${}_4$(OH)${}_2$ in tilted magnetic fields up to 10 T and temperatures down to 0.2 K. By means of torque magnetometry we investigate the phase diagram evolution as the magnetic field undergoes rotation in ${\mathbf{ba}}^{\ast }$ and $\mathbf{bc}$ planes. The key finding is the robustness of the high field spin density wave-like phase, which may persist even as the external field goes orthogonal to the chain direction $\mathbf{b}$. In contrast, the intermediate collinear antiferromagnetic phase collapses at moderate deflection angles with respect to $\mathbf{b}$ axis.

7 pages, 9 figures

References in corpus (4)

• Emergent multipolar spin correlations in a fluctuating spiral - The frustrated ferromagnetic S=1/2 Heisenberg chain in a magnetic field
• Spin-Nematic and Spin-Density-Wave Orders in Spatially Anisotropic Frustrated Magnets in a Magnetic Field
• The dynamics of linarite: Observations of magnetic excitations
• Multiferroic phases of the frustrated quantum spin-chain compound linarite

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• Electron spin resonance in spiral antiferromagnet linarite: theory and experiment
• Magnetic-field-induced reorientation in the SDW and the spin-stripe phases of the frustrated spin-1/2 chain compound $\beta$-TeVO${}_4$