Interplay between multipolar spin interactions, Jahn-Teller effect, and electronic correlation in a J_eff = 3/2 insulator - Archive ouverte HAL
Article Dans Une Revue Physical Review B Année : 2021

Interplay between multipolar spin interactions, Jahn-Teller effect, and electronic correlation in a J_eff = 3/2 insulator

Résumé

In this work we study the complex entanglement between spin interactions, electron correlation and Janh-Teller structural instabilities in the 5d 1 J ef f = 3 2 spin-orbit coupled double perovskite Ba2NaOsO6 using first principles approaches. By combining non-collinear magnetic calculations with multipolar pseudospin Hamiltonian analysis and many-body techniques we elucidate the origin of the observed quadrupolar canted antifferomagnetic. We show that the non-collinear magnetic order originates from Jahn-Teller distortions due to the cooperation of Heisenberg exchange, quadrupolar spin-spin terms and both dipolar and multipolar Dzyaloshinskii-Moriya interactions. We find a strong competition between ferromagnetic and antiferromagnetic canted and collinear quadrupolar magnetic phases: the transition from one magnetic order to another can be controlled by the strength of the electronic correlation (U) and by the degree of Jahn-Teller distortions.
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Dates et versions

hal-04460287 , version 1 (15-02-2024)

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Dario Fiore Mosca, Leonid V Pourovskii, Beom Hyun Kim, Peitao Liu, Samuele Sanna, et al.. Interplay between multipolar spin interactions, Jahn-Teller effect, and electronic correlation in a J_eff = 3/2 insulator. Physical Review B, 2021, 103 (10), pp.104401. ⟨10.1103/PhysRevB.103.104401⟩. ⟨hal-04460287⟩
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