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• W4288052170 endingPage "12148" @default.
• W4288052170 startingPage "12138" @default.
• W4288052170 abstract "The antisymmetric exchange, also known as the Dzyaloshinskii–Moriya interaction (DMI), is an effective interaction that may be at play in isolated complexes (with transition metals or lanthanides, for instance), nanoparticles, and highly correlated materials with adequate symmetry properties. While many theoretical works have been devoted to the analysis of single-ion zero-field splitting and to a lesser extent to symmetric exchange, only a few ab initio studies deal with the DMI. Actually, it originates from a subtle interplay between weak electronic interactions and spin–orbit couplings. This article aims to highlight the origin of this interaction from theoretical grounds in a real tri-copper(II) complex, capitalizing on previous methodological studies on bi-copper(II) model complexes. By tackling this three-magnetic-center system, we will first show that the multispin model Hamiltonian is appropriate for trinuclear (and likely for higher nuclearity) complexes, then that the correct application of the permutation relationship is necessary to explain the outcomes of the ab initio calculations, and finally, that the model parameters extracted from a binuclear model transfer well to the trinuclear complex. For a more theory-oriented purpose, we will show that the use of a simplified structural model allows one to perform more demanding electronic structure calculations. On this simpler system, we will first check that the previous transferability is still valid, prior to performing more advanced calculations on the derived two-magnetic-center model system. To this end, we will explain in detail the physics of the DMI in the copper triangle of interest, before advocating further theory/experiment efforts." @default.
• W4288052170 created "2022-07-28" @default.
• W4288052170 creator A5018001797 @default.
• W4288052170 creator A5028096778 @default.
• W4288052170 creator A5040341832 @default.
• W4288052170 creator A5042957930 @default.
• W4288052170 date "2022-07-27" @default.
• W4288052170 modified "2023-10-17" @default.
• W4288052170 title "Antisymmetric Exchange in a Real Copper Triangular Complex" @default.
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