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|Title:||Realization of the anisotropic compass model on the diamond lattice of Cu2+ in CuAl2 O4|
|Authors:||Nikolaev, S. A.|
Solovyev, I. V.
Ignatenko, A. N.
Irkhin, V. Yu.
Streltsov, S. V.
|Publisher:||American Physical Society|
|Citation:||Realization of the anisotropic compass model on the diamond lattice of Cu2+ in CuAl2 O4 / S. A. Nikolaev, I. V. Solovyev, A. N. Ignatenko, et al. — DOI 10.1103/PhysRevB.98.201106 // Physical Review B. — 2018. — Vol. 98. — Iss. 20. — 201106.|
|Abstract:||Spin-orbit (SO) Mott insulators are regarded as a new paradigm of magnetic materials, whose properties are largely influenced by SO coupling and featured by highly anisotropic bond-dependent exchange interactions between the spin-orbital entangled Kramers doublets, as typically manifested in 5d iridates. Here, we propose that a very similar situation can be realized in cuprates when the Cu2+ ions reside in a tetrahedral environment, as in spinel compounds. Using first-principles electronic structure calculations, we construct a realistic model for the diamond lattice of the Cu2+ ions in CuAl2O4 and show that the magnetic properties of this compound are largely controlled by anisotropic compass-type exchange interactions that dramatically modify the magnetic ground state by lifting the spiral spin-liquid degeneracy and stabilizing a commensurate single-q spiral. © 2018 American Physical Society.|
|Appears in Collections:||Научные публикации, проиндексированные в SCOPUS и WoS CC|
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