Considerations for ultrafast photomagnetism in manganese(III)-based single-molecule magnets

被引:2
作者
Barlow, K. [1 ]
Johansson, J. O. [1 ]
机构
[1] Univ Edinburgh, EaStCHEM Sch Chem, David Brewster Rd, Edinburgh EH9 3FJ, Scotland
来源
CHEMICAL PHYSICS REVIEWS | 2024年 / 5卷 / 03期
基金
英国科研创新办公室; 英国工程与自然科学研究理事会;
关键词
PHOTOINDUCED STRUCTURAL-CHANGE; CIRCULAR-DICHROISM; CHARGE-TRANSFER; STATE; DYNAMICS; COMPLEX; DESIGN; FIELD; TIME; 3D;
D O I
10.1063/5.0218344
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Manipulation of magnetic materials is a cornerstone of digital data storage technologies. Recently, it has been shown that femtosecond laser pulses are capable of switching the magnetization in a material between two stable configurations faster than ever before. One state-of-the-art method is to use laser pulses to control the magnetic anisotropy by photoexciting crystal-field transitions. The photoinduced change in anisotropy applies a torque to the magnetic moment, which reorientates it in a different direction. So far, research has focused solely on condensed matter materials. However, there is a huge variety of molecule-based magnetic materials that have been and continue to be developed. In particular, single-molecule magnets (SMMs) provide a highly tunable platform and have the added advantage of operating on nanometer length scales. This review discusses recent research in the area of ultrafast magnetism in SMMs, with a focus on manganese(III)-based transition metal complexes. Experimental data are reviewed, showing that control of the strength of the photoinduced anisotropy, the lifetime of excited states, and the dephasing times are possible and can be used to develop some design criteria for the best optically controllable SMMs.
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页数:11
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