Large second harmonic generation of LiCs2PO4 caused by the metal-cation-centered groups
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2018
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866912931066675200 |
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| author | Cheng, Xiyue Whangbo, Myung-Hwan Guo, Guo-Cong Hong, Maochun Deng, Shuiquan |
| author_facet | Cheng, Xiyue Whangbo, Myung-Hwan Guo, Guo-Cong Hong, Maochun Deng, Shuiquan |
| contents | We evaluated the individual atom contributions to the second harmonic generation (SHG) coefficients of LiCs2PO4 (LCPO) by introducing the partial response functionals on the basis of first principles calculations. The SHG response of LCPO is dominated by the metal-cation-centered groups CsO6 and LiO4, not by the nonmetal-cation-centered groups PO4 one expects from the existing models and theories. The SHG coefficients of LCPO are determined mainly by the occupied orbitals O-2p and Cs-5p as well as by the unoccupied orbitals Cs-5d and Li-2p. For the SHG response of a material, the polarizable atomic orbitals of the occupied and the unoccupied states are both important. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1803_00748 |
| institution | arXiv |
| publishDate | 2018 |
| record_format | arxiv |
| spellingShingle | Large second harmonic generation of LiCs2PO4 caused by the metal-cation-centered groups Cheng, Xiyue Whangbo, Myung-Hwan Guo, Guo-Cong Hong, Maochun Deng, Shuiquan Materials Science We evaluated the individual atom contributions to the second harmonic generation (SHG) coefficients of LiCs2PO4 (LCPO) by introducing the partial response functionals on the basis of first principles calculations. The SHG response of LCPO is dominated by the metal-cation-centered groups CsO6 and LiO4, not by the nonmetal-cation-centered groups PO4 one expects from the existing models and theories. The SHG coefficients of LCPO are determined mainly by the occupied orbitals O-2p and Cs-5p as well as by the unoccupied orbitals Cs-5d and Li-2p. For the SHG response of a material, the polarizable atomic orbitals of the occupied and the unoccupied states are both important. |
| title | Large second harmonic generation of LiCs2PO4 caused by the metal-cation-centered groups |
| topic | Materials Science |
| url | https://arxiv.org/abs/1803.00748 |