%0 Journal Article %1 PhysRevB.109.104433 %A Facheris, L. %A Nabi, S. D. %A Povarov, K. Yu. %A Yan, Z. %A Moshe, A. Glezer %A Nagel, U. %A Rõõm, T. %A Podlesnyak, A. %A Ressouche, E. %A Beauvois, K. %A Stewart, J. R. %A Manuel, P. %A Khalyavin, D. %A Orlandi, F. %A Zheludev, A. %D 2024 %I American Physical Society %J Phys. Rev. B %K b %N 10 %P 104433 %R 10.1103/PhysRevB.109.104433 %T Magnetic field induced phases and spin Hamiltonian in Cs$_2$CoBr$_4$ %U https://link.aps.org/doi/10.1103/PhysRevB.109.104433 %V 109 %X Magnetic structures and spin excitations are studied across the phase diagram of the geometrically frustrated S = 3/2 quantum antiferromagnet Cs2CoBr4 in magnetic fields applied along the magnetic easy axis, using neutron diffraction, inelastic neutron scattering and THz absorption spectroscopy. The data are analyzed, where appropriate, using extended SU (4) linear spin wave theory. A minimal magnetic Hamiltonian is proposed based on measurements in the high field polarized state. It deviates considerably from the previously considered models. Additional dilatometry experiments highlight the importance of magnetoelastic coupling in this system.

@article{PhysRevB.109.104433, abstract = {Magnetic structures and spin excitations are studied across the phase diagram of the geometrically frustrated S = 3/2 quantum antiferromagnet Cs2CoBr4 in magnetic fields applied along the magnetic easy axis, using neutron diffraction, inelastic neutron scattering and THz absorption spectroscopy. The data are analyzed, where appropriate, using extended SU (4) linear spin wave theory. A minimal magnetic Hamiltonian is proposed based on measurements in the high field polarized state. It deviates considerably from the previously considered models. Additional dilatometry experiments highlight the importance of magnetoelastic coupling in this system. }, added-at = {2024-06-12T11:09:35.000+0200}, author = {Facheris, L. and Nabi, S. D. and Povarov, K. Yu. and Yan, Z. and Moshe, A. Glezer and Nagel, U. and Rõõm, T. and Podlesnyak, A. and Ressouche, E. and Beauvois, K. and Stewart, J. R. and Manuel, P. and Khalyavin, D. and Orlandi, F. and Zheludev, A.}, biburl = {https://www.bibsonomy.org/bibtex/2e00673dfef2b964c20f37c136cc715cd/ctqmat}, day = 27, doi = {10.1103/PhysRevB.109.104433}, interhash = {d31df9af3ba829cbaddcff55b561dfaa}, intrahash = {e00673dfef2b964c20f37c136cc715cd}, journal = {Phys. Rev. B}, keywords = {b}, month = {03}, number = 10, numpages = {13}, pages = 104433, publisher = {American Physical Society}, timestamp = {2024-07-03T12:14:14.000+0200}, title = {Magnetic field induced phases and spin Hamiltonian in Cs$_{\mathbf{2}}$CoBr$_{\mathbf{4}}$}, url = {https://link.aps.org/doi/10.1103/PhysRevB.109.104433}, volume = 109, year = 2024 }