Quantum Spin Wave Excited from a Cr-Dy Single-Molecule Magnet

被引：1
作者：
Ling, Bo-Kai [1 ,2 ]
Chang, Ming [1 ]
Zhai, Yuan-Qi [1 ]
Deng, Jiewei [3 ]
Kofu, Maiko [4 ]
Guo, Hanjie [5 ]
Zhao, Jinkui [5 ,6 ,7 ]
Fu, Zhendong [5 ]
Zheng, Yan-Zhen [1 ]
机构：
[1] Xi An Jiao Tong Univ, Frontier Inst Sci & Technol, State Key Lab Elect Insulat & Power Equipment, Sch Chem,Interdisciplinary Res Ctr Frontier Sci &, R China, Xian 710054, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ, Sch Chem & Chem Engn, Minist Ind & Informat Technol, Xian Key Lab Funct Organ Porous Mat,Key Lab Specia, R China, Xian 710072, Shaanxi, Peoples R China
[3] Guangdong Univ Technol, Sch Biomed & Pharmaceut Sci, Guangzhou 510006, Peoples R China
[4] Japan Atom Energy Agcy, JPARC Ctr, Tokai, Ibaraki 3191195, Japan
[5] Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
[6] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[7] Great Bay Univ, Sch Phys Sci, Dongguan 523808, Peoples R China
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2025年 / 147卷 / 13期
基金：
国家重点研发计划;
关键词：
MAGNETIZATION; COMPLEXES;
D O I：
10.1021/jacs.4c13628
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The efficient excitation and controlled propagation of nanoscale spin waves remain significant challenges, as their intrinsic dispersion relations are primarily determined by magnetic dipole and exchange interactions. Here we report the first observed coexistence of quantum spin wave excitation and single-molecule magnet behavior in a mixed chromium(III) and dysprosium(III) complex, namely Dy4Cr2(mu(3)-F)(2)(mdea)(3)(piv)(10), which shows a large ferrimagnetic ground moment with a restricted quantum tunneling gap (<3.8 x 10(-7) cm(-1)) up to nine levels, leading to an axial anisotropic energy barrier of 12 cm(-1) and opened hysteresis loop at 0.4 K. More importantly, quantized spin wave excitations ranging from 108 to 352 GHz have been observed by using inelastic neutron scattering spectroscopy, and the data can be well explained by the L&E-band theory with Delta/2 = 2.08 cm(-1) and epsilon(q) = 2.5 cm(-1), providing unambiguous evidence for nanoscale spin waves.
引用
收藏
页码：10935 / 10942
页数：8
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