Metallic Nature and Optical Anisotropy in CsLa: A CASTEP‐Based Investigation.
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| Title: | Metallic Nature and Optical Anisotropy in CsLa: A CASTEP‐Based Investigation. |
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| Authors: | Rahman, Mosfiqur1,2 (AUTHOR) mosfiqur@uttarauniversity.edu.bd, Tanisa, Nilufer Yesmin1 (AUTHOR), Parvez, Asif1 (AUTHOR), Akter, Mst. Afroza3 (AUTHOR), Bai, Yulong (AUTHOR) ylbai@imu.edu.cn |
| Source: | Advances in Condensed Matter Physics. 5/19/2026, Vol. 2026, p1-9. 9p. |
| Subjects: | Anisotropy, Electronic structure, Electric conductivity, Infrared technology, Dielectric properties, Density functional theory, Cesium compounds |
| Abstract: | We highlight a theoretical investigation of the structure, electronic states, and optical response of the polar intermetallic complex CsLa in this article. The proposed hexagonal noncentrosymmetric structure has been optimized using density functional theory (DFT) in the framework of GGA and Perdew–Burke–Ernzerhof (PBE), demonstrating a small expansion and a comparatively low bulk modulus—features that represent mechanical softness. Density of states (DOS) and band structure calculations clearly establish metallic conductivity, dominated by La–5d and Cs–5p orbital contributions at the Fermi level. Significant anisotropy is revealed by optical analysis: reflectance, absorption spectra, and dielectric constants are all significantly changed with crystallographic orientations. Additionally, efficient charge transport and directional energy dissipation properties can be achieved by high static dielectric values and clear, relatively small energy absorption peaks. These characteristics suggest that CsLa might be applicable in energy conversion devices, high‐k dielectric applications, and infrared photonics. Overall, CsLa emerges as a promising candidate for multifunctional optoelectronic materials due to its symmetry‐breaking geometry combined with metallic conductivity and anisotropic optical response. [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Condensed Matter Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 193857224 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Metallic Nature and Optical Anisotropy in CsLa: A CASTEP‐Based Investigation. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Rahman%2C+Mosfiqur%22">Rahman, Mosfiqur</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> mosfiqur@uttarauniversity.edu.bd</i><br /><searchLink fieldCode="AR" term="%22Tanisa%2C+Nilufer+Yesmin%22">Tanisa, Nilufer Yesmin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Parvez%2C+Asif%22">Parvez, Asif</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Akter%2C+Mst%2E+Afroza%22">Akter, Mst. Afroza</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bai%2C+Yulong%22">Bai, Yulong</searchLink> (AUTHOR)<i> ylbai@imu.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Condensed+Matter+Physics%22">Advances in Condensed Matter Physics</searchLink>. 5/19/2026, Vol. 2026, p1-9. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Anisotropy%22">Anisotropy</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+structure%22">Electronic structure</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+conductivity%22">Electric conductivity</searchLink><br /><searchLink fieldCode="DE" term="%22Infrared+technology%22">Infrared technology</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+properties%22">Dielectric properties</searchLink><br /><searchLink fieldCode="DE" term="%22Density+functional+theory%22">Density functional theory</searchLink><br /><searchLink fieldCode="DE" term="%22Cesium+compounds%22">Cesium compounds</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: We highlight a theoretical investigation of the structure, electronic states, and optical response of the polar intermetallic complex CsLa in this article. The proposed hexagonal noncentrosymmetric structure has been optimized using density functional theory (DFT) in the framework of GGA and Perdew–Burke–Ernzerhof (PBE), demonstrating a small expansion and a comparatively low bulk modulus—features that represent mechanical softness. Density of states (DOS) and band structure calculations clearly establish metallic conductivity, dominated by La–5d and Cs–5p orbital contributions at the Fermi level. Significant anisotropy is revealed by optical analysis: reflectance, absorption spectra, and dielectric constants are all significantly changed with crystallographic orientations. Additionally, efficient charge transport and directional energy dissipation properties can be achieved by high static dielectric values and clear, relatively small energy absorption peaks. These characteristics suggest that CsLa might be applicable in energy conversion devices, high‐k dielectric applications, and infrared photonics. Overall, CsLa emerges as a promising candidate for multifunctional optoelectronic materials due to its symmetry‐breaking geometry combined with metallic conductivity and anisotropic optical response. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Condensed Matter Physics is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1155/acmp/7172084 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1 Subjects: – SubjectFull: Anisotropy Type: general – SubjectFull: Electronic structure Type: general – SubjectFull: Electric conductivity Type: general – SubjectFull: Infrared technology Type: general – SubjectFull: Dielectric properties Type: general – SubjectFull: Density functional theory Type: general – SubjectFull: Cesium compounds Type: general Titles: – TitleFull: Metallic Nature and Optical Anisotropy in CsLa: A CASTEP‐Based Investigation. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Rahman, Mosfiqur – PersonEntity: Name: NameFull: Tanisa, Nilufer Yesmin – PersonEntity: Name: NameFull: Parvez, Asif – PersonEntity: Name: NameFull: Akter, Mst. Afroza – PersonEntity: Name: NameFull: Bai, Yulong IsPartOfRelationships: – BibEntity: Dates: – D: 19 M: 05 Text: 5/19/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 16878108 Numbering: – Type: volume Value: 2026 Titles: – TitleFull: Advances in Condensed Matter Physics Type: main |
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