Magnetization tunneling in high-symmetry Mn₁₂ single-molecule magnets

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• 作者：Stephen Hill
• 关键词：Single-molecule magnets ; Mn12-acetate ; EPR ; Magnetization tunneling
• 刊名：Polyhedron
• 出版年：2013
• 出版时间：12 November, 2013
• 年：2013
• 卷：64
• 期：Complete
• 页码：128-135
• 全文大小：1073 K

文摘

This review has been adapted from a talk given by the author at the Third Workshop on Current Trends in Molecular and Nanoscale Magnetism, organized by George Christou in Orlando, Florida, June 2010. A very basic introduction to the theory of resonant quantum tunneling in single-molecule magnets (SMMs) is first given, followed by a short discussion of the Mn₁₂-acetate single-molecule magnet (SMM) and the solvent disorder that is known to perturb the intrinsic magnetization tunneling behavior observed in this compound. The remainder of the review focuses on key developments resulting from the preparation of several high-symmetry, spin S = 10 Mn₁₂ clusters by the Christou group that do not suffer problems associated with disorder to the same extent as the original Mn₁₂-acetate. Studies of these newer/cleaner Mn₁₂¡¯s have thus contributed significantly to our current understanding of resonant magnetization tunneling in molecular nanomagnets. This review is intended for both chemists and physicists, particularly junior researchers who are just starting work in the field.