Magnetic ordering with reduced cerium moments in hole-doped CeOs2Al10

Khalyavin, D. D.; Adroja, D. T.; Bhattacharyya, A.; Hillier, A. D.; Manuel, P.; Strydom, A. M.; Kawabata, J.; Takabatake, T.

doi:10.1103/PhysRevB.89.064422

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Magnetic ordering with reduced cerium moments in hole-doped CeOs₂Al₁₀

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Strydom, A. M.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Khalyavin, D. D., Adroja, D. T., Bhattacharyya, A., Hillier, A. D., Manuel, P., Strydom, A. M., et al. (2014). Magnetic ordering with reduced cerium moments in hole-doped CeOs₂Al₁₀. Physical Review B, 89(6): 064422, pp. 1-5. doi:10.1103/PhysRevB.89.064422.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0018-86C2-A

Abstract

The lightly hole-doped system CeOs1.94Re0.06Al10 has been studied by muon spin relaxation and neutron diffraction measurements. A long-range antiferromagnetic ordering of the Ce sublattice with a substantially reduced value of the magnetic moment 0.18(1)mu(B) has been found below T-N = 21 K. Similar to the undoped parent compound, the magnetic ground state of CeOs1.94Re0.06Al10 preserves the anomalous direction of the ordered moments along the c axis. The obtained result reveals the crucial difference between electron-and hole-doping effects on the magnetic ordering in CeOs2Al10. The former suppresses the anisotropic c-f hybridization and promotes localized Ce moments controlled by single ion anisotropy. On the contrary, the latter increases the hybridization, keeping the dominant role of the anisotropic exchange on the direction of the moments and shifts the system towards a delocalized nonmagnetic state.