A Cost-Effective Semi-Ab Initio Approach to Model Relaxation in Rare-Earth Single-Molecule Magnets.
A Cost-Effective Semi-Ab Initio Approach to Model Relaxation in Rare-Earth Single-Molecule Magnets.
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DOI:
10.1021/acs.jpclett.1c02367
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发表时间:
2021-09-16
期刊:
影响因子:
--
通讯作者:
Carretta S
中科院分区:
文献类型:
--
作者:
Garlatti E;Chiesa A;Bonfà P;Macaluso E;Onuorah IJ;Parmar VS;Ding YS;Zheng YZ;Giansiracusa MJ;Reta D;Pavarini E;Guidi T;Mills DP;Chilton NF;Winpenny REP;Santini P;Carretta S
We discuss a cost-effective approach to understand magnetic relaxation in the new generation of rare-earth single-molecule magnets. It combines ab initio calculations of the crystal field parameters, of the magneto-elastic coupling with local modes, and of the phonon density of states with fitting of only three microscopic parameters. Although much less demanding than a fully ab initio approach, the method gives important physical insights into the origin of the observed relaxation. By applying it to high-anisotropy compounds with very different relaxation, we demonstrate the power of the approach and pinpoint ingredients for improving the performance of single-molecule magnets.
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