dc.contributor.author | Evarestov, Robert A. | |
dc.contributor.author | Kuzmin, Alexei | |
dc.date.accessioned | 2020-11-11T07:49:51Z | |
dc.date.available | 2020-11-11T07:49:51Z | |
dc.date.issued | 2020 | |
dc.identifier.issn | 0192-8651 | |
dc.identifier.uri | https://dspace.lu.lv/dspace/handle/7/52879 | |
dc.description | The authors acknowledge the assistance of the University Computer Center of Saint-Petersburg State University in the accomplishment of high-performance computations. A.K. is grateful to the Latvian Council of Science project no. lzp-2018/2-0353 for financial support. Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2. | en_US |
dc.description.abstract | Two pressure-induced phase transitions have been theoretically studied in the layered iron phosphorus triselenide (FePSe3 ). Topological analysis of chemical bonding in FePSe3 has been performed based on the results of first-principles calculations within the periodic linear combination of atomic orbitals (LCAO) method with hybrid Hartree-Fock-DFT B3LYP functional. The first transition at about 6 GPa is accompanied by the symmetry change from R 3 ¯ to C2/m, whereas the semiconductor-to-metal transition (SMT) occurs at about 13 GPa leading to the symmetry change from C2/m to P 3 ¯ 1 m . We found that the collapse of the band gap at about 13 GPa occurs due to changes in the electronic structure of FePSe3 induced by relative displacements of phosphorus or selenium atoms along the c-axis direction under pressure. The results of the topological analysis of the electron density and its Laplacian demonstrate that the pressure changes not only the interatomic distances but also the bond nature between the intralayer and interlayer phosphorus atoms. The interlayer P-P interactions are absent in two non-metallic FePSe3 phases while after SMT the intralayer P-P interactions weaken and the interlayer P-P interactions appear. | en_US |
dc.description.sponsorship | Latvian Council of Science project no. lzp-2018/2-0353; Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Wiley | en_US |
dc.relation | info:eu-repo/grantAgreement/EC/H2020/739508/EU/Centre of Advanced Material Research and Technology Transfer/CAMART² | en_US |
dc.relation.ispartofseries | Journal of Computational Chemistry;41(31) | |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Research Subject Categories::NATURAL SCIENCES:Physics | en_US |
dc.subject | FePSe3 | en_US |
dc.subject | layered compound | en_US |
dc.subject | topological analysis | en_US |
dc.subject | high pressure | en_US |
dc.subject | semiconductor-to-metal transition | en_US |
dc.subject | first-principles calculations | en_US |
dc.title | Topological analysis of chemical bonding in the layered FePSe3 upon pressure-induced phase transitions | en_US |
dc.type | info:eu-repo/semantics/article | en_US |
dc.identifier.doi | 10.1002/jcc.26416 | |