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首页> 外文期刊>Journal of Materials Chemistry, C. materials for optical and electronic devices >Vibronic barrier effect of magnetic relaxation in single-molecule magnets
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Vibronic barrier effect of magnetic relaxation in single-molecule magnets

机译：单分子磁体中磁性松弛的振动阻挡效应

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Single-molecule magnets (SMMs) are a group of coordination complexes consisting of magnetic atoms and organic ligands, in which the coupling between the spin and local vibrational modes is of critical importance for magnetic relaxation. Vibronic barriers due to spin-phonon coupling have recently been proven to provide explanations for the under-barrier relaxation and anomalously low Raman exponents, two puzzles that have eluded researchers in this area over the decades and pervaded many experiments. Two studies (Phys. Rev. Lett. 2020, 125, 117203 and Phys. Rev. B 2021, 103, 014401) have elucidated them as being a result of a multi optical phonon-assisted Raman process in disguise, which introduces the gist and wide implication of this relaxation mechanism. This theory deductively unifies different magnetic relaxation processes in a quantum way, which can also be applied for more general systems.
机译：单分子磁体是一组由磁性原子和有机配体组成的配合物，其中自旋和局域振动模式之间的耦合对磁弛豫至关重要。由于自旋-声子耦合而产生的振动势垒最近被证明为势垒下弛豫和异常低的拉曼指数提供了解释，这两个难题在过去几十年中一直困扰着该领域的研究人员，并渗透到许多实验中。两个研究（Pys.Rev LeT.2020, 125, 117203和Py.Rev B 2021, 103，014401）已经阐明了它们是伪装的多光学声子辅助拉曼过程的结果，这介绍了这种弛豫机制的要点和广泛含义。该理论以量子方式演绎地统一了不同的磁弛豫过程，这也适用于更一般的系统。

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