Diffuse optical excitations in Mn 12 -acetate
Diffuse optical excitations in Mn 12 -acetate
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Mn 12 -乙酸盐中的漫射光激发
DOI：
10.1103/physrevb.65.054419
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发表时间：
2002
影响因子：
3.7
通讯作者：
N. Dalal
中科院分区：
文献类型：
--
作者：
S. Oppenheimer;A. Sushkov;J. Musfeldt;R. Achey;N. Dalal
我们报告的透射率和偏振反射率的测量结晶锰1 2 -乙酸酯在较宽的频率范围内（600-50 000 cm - 1），调查这种原型分子磁体的电子结构。总的来说，光谱特征是相当分散的下降到10 K，虽然一些Mn内→外和O p→ Mn d电荷转移激发观察和分配。两个最低的能量激发（在13500和15900 cm - 1）极化垂直于易磁化（c）轴。光学间隙估计为8750 cm（1.08 eV）和14 000 cm -（1.75 eV），分别对应于少数和多数间隙。
We report transmittance and polarized reflectance measurements of crystalline Mn 1 2 -acetate over a wide frequency range (600-50 000 cm - 1 ) to investigate the electronic structure of this prototypical molecular magnet. Overall, the spectral features are quite diffuse down to 10 K, although a number of Mn inner → outer and O p→ Mn d charge transfer excitations are observed and assigned. The two lowest energy excitations (at 13500 and 15 900 cm - 1 ) are polarized perpendicular to the easy magnetization (c) axis. Optical gaps are estimated at 8750 cm (1.08 eV) and 14 000 cm - (1.75 eV), corresponding to minority and majority gaps, respectively.