Magnetic interactions in the $S = 1/2$ square-lattice antiferromagnets Ba$_2$CuTeO$_6$ and Ba$_2$CuWO$_6$: parent phases of a possible spin liquid

O. Mustonen; S. Vasala; H. Mutch; C. I. Thomas; G. B. G. Stenning; E. Baggio-Saitovitch; E. J. Cussen; M. Karppinen

doi:10.1039/C8CC09479A

paper

Magnetic interactions in the $S = 1/2$ square-lattice antiferromagnets Ba $_{2}$ CuTeO $_{6}$ and Ba $_{2}$ CuWO $_{6}$ : parent phases of a possible spin liquid

arXiv:1812.05619 · doi:10.1039/C8CC09479A

Abstract

The isostructural double perovskites Ba $_{2}$ CuTeO $_{6}$ and Ba $_{2}$ CuWO $_{6}$ are shown by theory and experiment to be frustrated square-lattice antiferromagnets with opposing dominant magnetic interactions. This is driven by differences in orbital hybridisation of Te $^{6 +}$ and W $^{6 +}$ . A spin-liquid-like ground state is predicted for Ba $_{2}$ Cu(Te $_{1 - x}$ W $_{x}$ )O $_{6}$ solid solution similar to recent observations in Sr $_{2}$ Cu(Te $_{1 - x}$ W $_{x}$ )O $_{6}$ .

4+4 pages, 3+2 figures

References in corpus (1)

Tuning the magnetic exchange via a control of orbital hybridization in Cr2(Te1-xWx)O6

Magnetic interactions in the S=1/2 square-lattice antiferromagnets Ba2​CuTeO6​ and Ba2​CuWO6​: parent phases of a possible spin liquid

Abstract

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Magnetic interactions in the $S = 1/2$ square-lattice antiferromagnets Ba $_{2}$ CuTeO $_{6}$ and Ba $_{2}$ CuWO $_{6}$ : parent phases of a possible spin liquid