Details

Autor(en) / Beteiligte

• Bordelon, Mitchell M
• Wang, Xiaoling
• Pajerowski, Daniel M
• Banerjee, Arnab
• Sherwin, Mark
• Brown, Craig M
• Eldeeb, M S
• Petersen, T
• Hozoi, L
• Rößler, U K
• Mourigal, Martin
• Wilson, Stephen D

Titel

Magnetic properties and signatures of moment ordering in the triangular lattice antiferromagnet KCeO2

Ist Teil von

• Physical review. B, 2021-09, Vol.104 (9), p.1

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2021

Quelle

APS: American Physical Society E-Journals (Physics)

Beschreibungen/Notizen

• The magnetic ground state and the crystalline electric field level scheme of the triangular lattice antiferromagnet KCeO2 are investigated. Below TN = 300 mK, KCeO2 develops signatures of magnetic order in specific heat measurements and low energy inelastic neutron scattering data. Trivalent Ce3+ ions in the D3d local environment of this compound exhibit large splittings among the lowest three 4 f 1 Kramers doublets defining for the free ion the J = 5/2 sextet and a ground state doublet with dipole character, consistent with recent theoretical predictions by Eldeeb et al. [Phys. Rev. Materials 4, 124001 (2020)]. An unexplained, additional local mode appears, and potential origins of this anomalous mode are discussed.