Can I read Magnetic excitations and electronic interactions in Sr$ 2$CuTeO$ 6$: a spin-1/2 square lattice Heisenberg antiferromagnet on EtoBox?

Magnetic excitations and electronic interactions in Sr$ 2$CuTeO$ 6$: a spin-1/2 square lattice Heisenberg antiferromagnet by Babkevich, P.; Katukuri, Vamshi M.; Fåk, B.; Rols, S.; Fennell, T.; Pajić, D.; Tanaka, H.; Pardini, T.; Singh, R. R. P.; Mitrushchenkov, A.; Yazyev, O. V.; Rønnow, H. M. is a scholarly article available to read on EtoBox.

What is Magnetic excitations and electronic interactions in Sr$ 2$CuTeO$ 6$: a spin-1/2 square lattice Heisenberg antiferromagnet about?

Sr$_2$CuTeO$_6$ presents an opportunity for exploring low-dimensional magnetism on a square lattice of $S=1/2$ Cu$^{2+}$ ions. We employ ab initio multi-reference configuration interaction calculations to unravel the Cu$^{2+}$ electronic structure and to evaluate exchange interactions in Sr$_2$CuTeO$_6$. The latter results are validated by inelastic neutron scattering using linear spin-wave theory and series-expansion corrections for quantum effects to extract true coupling parameters. Using this methodology, which is quite general, we demonstrate that Sr$_2$CuTeO$_6$ is an almost realization of a nearest-neighbor Heisenberg antiferromagnet but with relatively weak coupling of 7.18(5) meV.

Author

Babkevich, P.; Katukuri, Vamshi M.; Fåk, B.; Rols, S.; Fennell, T.; Pajić, D.; Tanaka, H.; Pardini, T.; Singh, R. R. P.; Mitrushchenkov, A.; Yazyev, O. V.; Rønnow, H. M.

Published

2016

Language

EN