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14 papers
Exchange interactions in Kitaev materials: From NaIrO to -RuCl
Huimei Liu, Jiri Chaloupka, Giniyat Khaliullin
We present an analytical study of the exchange interactions between pseudospin one-half ions in honeycomb lattices with edge-shared octahedra. Various exchange channels inv…
Spin-orbit-entangled electronic phases in 4 and 5 transition-metal compounds
Tomohiro Takayama, Jiri Chaloupka, Andrew Smerald +2
Complex oxides with and transition-metal ions recently emerged as a new paradigm in correlated electron physics, due to the interplay between spin-orbit coupling and elec…
Kitaev Spin Liquid in 3d Transition Metal Compounds
Huimei Liu, Jiri Chaloupka, Giniyat Khaliullin
We study the exchange interactions and resulting magnetic phases in the honeycomb cobaltates. For a broad range of trigonal crystal fields acting on Co2+ ions, the low-energy pseud…
How spin-orbital entanglement depends on the spin-orbit coupling in a Mott insulator
Dorota Gotfryd, Ekaterina M. Paerschke, Jiri Chaloupka +2
The concept of the entanglement between spin and orbital degrees of freedom plays a crucial role in understanding various phases and exotic ground states in a broad class of materi…
Raman scattering from Higgs mode oscillations in the two-dimensional antiferromagnet CaRuO
Sofia-Michaela Souliou, Jiří Chaloupka, Giniyat Khaliullin +5
We present and analyze Raman spectra of the Mott insulator CaRuO, whose quasi-two-dimensional antiferromagnetic order has been described as a condensate of low-lying spin-o…
Soft spin-amplitude fluctuations in a Mott-insulating ruthenate
A. Jain, M. Krautloher, J. Porras +9
Magnetism in transition-metal compounds (TMCs) has traditionally been associated with spin degrees of freedom, because the orbital magnetic moments are typically largely quenched.…