Can I read The Two-Dimensional Square-Lattice S=1/2 Antiferromagnet Cu(pz)$ 2$(ClO$ 4$)$ 2$ on EtoBox?

The Two-Dimensional Square-Lattice S=1/2 Antiferromagnet Cu(pz)$ 2$(ClO$ 4$)$ 2$ by Tsyrulin, N.; Xiao, F.; Schneidewind, A.; Link, P.; Rønnow, H. M.; Gavilano, J.; Landee, C. P.; Turnbull, M. M.; Kenzelmann, M. is a scholarly article available to read on EtoBox.

What is The Two-Dimensional Square-Lattice S=1/2 Antiferromagnet Cu(pz)$ 2$(ClO$ 4$)$ 2$ about?

We present an experimental study of the two-dimensional S=1/2 square-lattice antiferromagnet Cu(pz)$_2$(ClO$_4$)$_2$ (pz denotes pyrazine - $C_4H_4N_2$) using specific heat measurements, neutron diffraction and cold-neutron spectroscopy. The magnetic field dependence of the magnetic ordering temperature was determined from specific heat measurements for fields perpendicular and parallel to the square-lattice planes, showing identical field-temperature phase diagrams. This suggest that spin anisotropies in Cu(pz)$_2$(ClO$_4$)$_2$ are small. The ordered antiferromagnetic structure is a collinear arrangement with the magnetic moments along either the crystallographic b- or c-axis. The estimated ordered magnetic moment at zero field is m_0=0.47(5)mu_B and thus much smaller than the available single-ion magnetic moment. This is evidence for strong quantum fluctuations in the ordered magnetic phase of Cu(pz)$_2$(ClO$_4$)$_2$. Magnetic fields applied perpendicular to the square-lattice planes lead to an increase of the antiferromagnetically ordered moment to m_0=0.93(5)mu_B at mu_0H=13.5T - evidence that magnetic fields quench quantum fluctuations. Neutron spectroscopy reveals the presenc

Author

Tsyrulin, N.; Xiao, F.; Schneidewind, A.; Link, P.; Rønnow, H. M.; Gavilano, J.; Landee, C. P.; Turnbull, M. M.; Kenzelmann, M.

Published

2010

Language

EN