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Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal
The spin-polarized second harmonic generation (SHG) of the recently synthesized CaCoSO single crystal is performed based on the calculated electronic band structure. The calculation reveals that the spin-up (↑) channel of CaCoSO possesses a direct energy gap (Γ(v)-Γ(c)) of about 2.187 eV, 1.187 eV (...
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5390297/ https://www.ncbi.nlm.nih.gov/pubmed/28406164 http://dx.doi.org/10.1038/srep46415 |
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author | Reshak, A. H. |
author_facet | Reshak, A. H. |
author_sort | Reshak, A. H. |
collection | PubMed |
description | The spin-polarized second harmonic generation (SHG) of the recently synthesized CaCoSO single crystal is performed based on the calculated electronic band structure. The calculation reveals that the spin-up (↑) channel of CaCoSO possesses a direct energy gap (Γ(v)-Γ(c)) of about 2.187 eV, 1.187 eV (K(v)-K(c)) for the spin-down (↓) channel and an indirect gap (Γ(v)-K(c)) of about 0.4 eV for the spin-polarized CaCoSO single crystal. The linear optical properties obtained reveal that the recently synthesized crystal exhibits considerable anisotropy with negative uniaxial anisotropy and birefringence favor to enhance the SHG. We have calculated the three non-zero tensor components of the SHG and found the [Image: see text] is the dominat component, one with a large SHG of about (d(33) = 6.936 pm/V at λ = 1064 nm), the half value of KTiOPO(4) (KTP). As the values of (↑)[Image: see text] < (↓)[Image: see text] < spin-polarized [Image: see text] are related to the values of the energy gap of (↑) 2.187 eV> (↓) 1.187 eV> spin-polarized gap 0.4 eV; therefore, a smaller energy gap gives better SHG performance. Furthermore, the microscopic first hyperpolarizability, β(ijk), is calculated. |
format | Online Article Text |
id | pubmed-5390297 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-53902972017-04-14 Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal Reshak, A. H. Sci Rep Article The spin-polarized second harmonic generation (SHG) of the recently synthesized CaCoSO single crystal is performed based on the calculated electronic band structure. The calculation reveals that the spin-up (↑) channel of CaCoSO possesses a direct energy gap (Γ(v)-Γ(c)) of about 2.187 eV, 1.187 eV (K(v)-K(c)) for the spin-down (↓) channel and an indirect gap (Γ(v)-K(c)) of about 0.4 eV for the spin-polarized CaCoSO single crystal. The linear optical properties obtained reveal that the recently synthesized crystal exhibits considerable anisotropy with negative uniaxial anisotropy and birefringence favor to enhance the SHG. We have calculated the three non-zero tensor components of the SHG and found the [Image: see text] is the dominat component, one with a large SHG of about (d(33) = 6.936 pm/V at λ = 1064 nm), the half value of KTiOPO(4) (KTP). As the values of (↑)[Image: see text] < (↓)[Image: see text] < spin-polarized [Image: see text] are related to the values of the energy gap of (↑) 2.187 eV> (↓) 1.187 eV> spin-polarized gap 0.4 eV; therefore, a smaller energy gap gives better SHG performance. Furthermore, the microscopic first hyperpolarizability, β(ijk), is calculated. Nature Publishing Group 2017-04-13 /pmc/articles/PMC5390297/ /pubmed/28406164 http://dx.doi.org/10.1038/srep46415 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Reshak, A. H. Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title | Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title_full | Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title_fullStr | Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title_full_unstemmed | Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title_short | Spin-polarized Second Harmonic Generation from the Antiferromagnetic CaCoSO Single Crystal |
title_sort | spin-polarized second harmonic generation from the antiferromagnetic cacoso single crystal |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5390297/ https://www.ncbi.nlm.nih.gov/pubmed/28406164 http://dx.doi.org/10.1038/srep46415 |
work_keys_str_mv | AT reshakah spinpolarizedsecondharmonicgenerationfromtheantiferromagneticcacososinglecrystal |