Probing ferroelectricity by x-ray absorption spectroscopy in molecular crystals
Probing ferroelectricity by x-ray absorption spectroscopy in molecular crystals
复制标题
通过 X 射线吸收光谱探测分子晶体中的铁电性
DOI:
10.1103/physrevmaterials.4.034401
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发表时间:
2020
影响因子:
3.4
通讯作者:
Xu, Xiaoshan
中科院分区:
文献类型:
--
作者:
Tang, Fujie;Jiang, Xuanyuan;Ko, Hsin-Yu;Xu, Jianhang;Topsakal, Mehmet;Hao, Guanhua;N'Diaye, Alpha T.;Dowben, Peter A.;Lu, Deyu;Xu, Xiaoshan
We carry out x-ray absorption spectroscopy experiment at the oxygenedge in croconic acid () crystal as a prototype of ferroelectric organic molecular solid, whose electric polarization is generated by proton transfer. The experimental spectrum is well reproduced by the electron-hole excitation theory simulations from configuration generated byab initiomolecular dynamics simulation. When inversion symmetry is broken in the ferroelectric state, the hydrogen bonding environment on the two bonded molecules become inequivalent. Such a difference is sensitively probed by the bound excitation in the pre-edge, which is strongly localized on the excited molecules. Our analysis shows that a satellite peak in the pre-edge will emerge at higher excitation energy, which serves as a clear signature of ferroelectricity in the material.
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DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
B. Kennedy;Qing;M. Avdeev
通讯作者:
M. Avdeev
影响因子:
3.7
作者:
Zhaoru Sun;Mohan Chen;Lixin Zheng;Jianping Wang;B. Santra;Huaze Shen;Limei Xu;W. Kang;M. Klein;Xifan Wu
通讯作者:
Xifan Wu
DOI:
10.1063/1.4813500
发表时间:
2013-07
期刊:
The Journal of chemical physics
影响因子:
--
作者:
Yaxuan Cai;S. Luo;Zhanwu Zhu;H. Gu
通讯作者:
Yaxuan Cai;S. Luo;Zhanwu Zhu;H. Gu
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Matsuoka;M.;N. Takeda
通讯作者:
N. Takeda
影响因子:
16.6
作者:
Horiuchi S;Kobayashi K;Kumai R;Ishibashi S
通讯作者:
Ishibashi S