Calculation of magnetic coupling constants with hybrid density functionals

The currently available computational methods for the calculation of magnetic coupling constants with density functional theory have been reviewed. These methods include modern approximations to the exchangecorrelation functional, such as hybrid, range-separated and double-hybrid functionals, as wel...

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Main Author: Mansikkamäki, Akseli
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Kemian laitos, Department of Chemistry, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2013
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/45989
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author Mansikkamäki, Akseli
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry University of Jyväskylä Jyväskylän yliopisto
author_facet Mansikkamäki, Akseli Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry University of Jyväskylä Jyväskylän yliopisto Mansikkamäki, Akseli Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Kemian laitos Department of Chemistry University of Jyväskylä Jyväskylän yliopisto
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description The currently available computational methods for the calculation of magnetic coupling constants with density functional theory have been reviewed. These methods include modern approximations to the exchangecorrelation functional, such as hybrid, range-separated and double-hybrid functionals, as well as approaches to treat the severe spin symmetry problems encountered in density functional calculations of magnetic interactions. In addition to the commonly used unrestricted Kohn–Sham formalism, density functional methods based on multireference wave functions and ensemble densities are also discussed. Performance of these models based on various studies has been summarized. The results indicate that self-interaction error plays an important role in the performance of density functional methods and is responsible for many of their shortcomings. If the self-interaction error and problems related to spin symmetry are treated in a theoretically correct manner, density functional theory can offer a very good description of magnetic coupling constants.
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spellingShingle Mansikkamäki, Akseli Calculation of magnetic coupling constants with hybrid density functionals DFT magnetic coupling magnetic coupling constants hybrid functionals Fysikaalinen kemia Physical Chemistry 4032 kytkentä
title Calculation of magnetic coupling constants with hybrid density functionals
title_full Calculation of magnetic coupling constants with hybrid density functionals
title_fullStr Calculation of magnetic coupling constants with hybrid density functionals Calculation of magnetic coupling constants with hybrid density functionals
title_full_unstemmed Calculation of magnetic coupling constants with hybrid density functionals Calculation of magnetic coupling constants with hybrid density functionals
title_short Calculation of magnetic coupling constants with hybrid density functionals
title_sort calculation of magnetic coupling constants with hybrid density functionals
title_txtP Calculation of magnetic coupling constants with hybrid density functionals
topic DFT magnetic coupling magnetic coupling constants hybrid functionals Fysikaalinen kemia Physical Chemistry 4032 kytkentä
topic_facet 4032 DFT Fysikaalinen kemia Physical Chemistry hybrid functionals kytkentä magnetic coupling magnetic coupling constants
url https://jyx.jyu.fi/handle/123456789/45989 http://www.urn.fi/URN:NBN:fi:jyu-201505211947
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