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A Spin Hamiltonian for BaCdVO(PO4) 2

Published

Author(s)

V. K. Bhartiya, S. Hayashida, K. Yu. Povarov, Z. Yan, Yiming Qiu, S. Raymond, A. Zheludev

Abstract

Single crystal inelastic neutron scattering is used to study spin wave excitations in the fully polarized state of the frustrated quantum ferro-antiferromagnet BaCdVO(PO4) 2. The data analysis is based on a Heisenberg spin Hamiltonian that includes as many distinct nearest-neighbor and next-nearest neighbor interactions as allowed by crystal symmetry. All 8 such exchange constants are obtained in a simultaneous fit to over 150 scans across the dispersion manifold. This establishes a definitive quantitative model of this material. It turns out to be substantially different from the one assumed in numerous previous studies based on powder experiments.
Citation
Physical Review B

Keywords

spin nematic phase, hamiltonian, neutron scattering

Citation

Bhartiya, V. , Hayashida, S. , Povarov, K. , Yan, Z. , Qiu, Y. , Raymond, S. and Zheludev, A. (2021), A Spin Hamiltonian for BaCdVO(PO<sub>4</sub>) <sub>2</sub>, Physical Review B (Accessed May 17, 2022)
Created April 1, 2021, Updated April 13, 2022