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dc.contributor.authorRepisky, Michal
dc.contributor.authorKomorovsky, Stanislav
dc.contributor.authorKadek, Marius
dc.contributor.authorKonecny, Lukas
dc.contributor.authorEkström, Ulf
dc.contributor.authorMalkin, Elena
dc.contributor.authorKaupp, Martin
dc.contributor.authorRuud, Kenneth
dc.contributor.authorMalkina, Olga L.
dc.contributor.authorMalkin, Vladimir G.
dc.date.accessioned2020-05-18T11:33:35Z
dc.date.available2020-05-18T11:33:35Z
dc.date.issued2020-05-11
dc.description.abstractWith the increasing interest in compounds containing heavier elements, the experimental and theoretical community requires computationally efficient approaches capable of simultaneous non-perturbative treatment of relativistic, spin-polarization, and electron correlation effects. The ReSpect program has been designed with this goal in mind and developed to perform relativistic density functional theory (DFT) calculations on molecules and solids at the quasirelativistic two-component (X2C Hamiltonian) and fully relativistic four-component (Dirac–Coulomb Hamiltonian) level of theory, including the effects of spin polarization in open-shell systems at the Kramers-unrestricted self-consistent field level. Through efficient algorithms exploiting time-reversal symmetry, biquaternion algebra, and the locality of atom-centered Gaussian-type orbitals, a significant reduction of the methodological complexity and computational cost has been achieved. This article summarizes the essential theoretical and technical advances made in the program, supplemented by example calculations. ReSpect allows molecules with >100 atoms to be efficiently handled at the four-component level of theory on standard central processing unit-based commodity clusters, at computational costs that rarely exceed a factor of 10 when compared to the non-relativistic realm. In addition to the prediction of band structures in solids, ReSpect offers a growing list of molecular spectroscopic parameters that range from electron paramagnetic resonance parameters (g-tensor, A-tensor, and zero-field splitting), via (p)NMR chemical shifts and nuclear spin–spin couplings, to various linear response properties using either conventional or damped-response time-dependent DFT (TDDFT): excitation energies, frequency-dependent polarizabilities, and natural chiroptical properties (electronic circular dichroism and optical rotatory dispersion). In addition, relativistic real-time TDDFT electron dynamics is another unique feature of the program. Documentation, including user manuals and tutorials, is available at the program’s website http://www.respectprogram.org.en_US
dc.identifier.citationRepisky M, Komorovsky S, Kadek M, Konecny L, Ekström, Malkin E, Kaupp M, Ruud K, Malkina OL, Malkin VG. ReSpect: Relativistic spectroscopy DFT program package. Journal of Chemical Physics. 2020;152en_US
dc.identifier.cristinIDFRIDAID 1810664
dc.identifier.doi10.1063/5.0005094
dc.identifier.issn0021-9606
dc.identifier.issn1089-7690
dc.identifier.urihttps://hdl.handle.net/10037/18328
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.relation.journalJournal of Chemical Physics
dc.relation.projectIDNorges forskningsråd: 262695en_US
dc.relation.projectIDNotur/NorStore: NN4654Ken_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/NRC/SFF/262695/Norway/Hylleraas Centre for Quantum Molecular Sciences//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440en_US
dc.titleReSpect: Relativistic spectroscopy DFT program packageen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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