MALKINA, Olga L., Juha VAARA, Bernd SCHIMMELPFENNIG, Markéta MUNZAROVÁ, Vladimir G. MALKIN and Martin KAUPP. Density Functional Calculations of Electronic g-Tensors Using Spin-Orbit Pseudopotentials and Mean-Field All-Electron Spin-OrbitOperators. The Journal of the American Chemical Society. Washington, D.C.: American Chemical Society, 2000, vol. 122, No 38, p. 9206-9218. ISSN 0002-7863. |
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@article{344292, author = {Malkina, Olga L. and Vaara, Juha and Schimmelpfennig, Bernd and Munzarová, Markéta and Malkin, Vladimir G. and Kaupp, Martin}, article_location = {Washington, D.C.}, article_number = {38}, keywords = {Density functional theory; g-tensors; spin-orbit coupling}, language = {eng}, issn = {0002-7863}, journal = {The Journal of the American Chemical Society}, title = {Density Functional Calculations of Electronic g-Tensors Using Spin-Orbit Pseudopotentials and Mean-Field All-Electron Spin-OrbitOperators}, volume = {122}, year = {2000} }
TY - JOUR ID - 344292 AU - Malkina, Olga L. - Vaara, Juha - Schimmelpfennig, Bernd - Munzarová, Markéta - Malkin, Vladimir G. - Kaupp, Martin PY - 2000 TI - Density Functional Calculations of Electronic g-Tensors Using Spin-Orbit Pseudopotentials and Mean-Field All-Electron Spin-OrbitOperators JF - The Journal of the American Chemical Society VL - 122 IS - 38 SP - 9206 EP - 9206 PB - American Chemical Society SN - 00027863 KW - Density functional theory KW - g-tensors KW - spin-orbit coupling N2 - Modern density-functional methods for the calculation of electronic g-tensors have been implemented within the framework of the deMon code. All relevant perturbation operators are included. Particular emphasis has been placed on accurate yet efficient treatment of the two-electron spin-orbit terms. At an all-electron level, the computationally inexpensive atomic mean-field approximation is shown to provide spin-orbit contributions in excellent agreement with the results obtained using explicit one- and two-electron spin-orbit integrals. Spin-other-orbit contributions account for up to 25-30% of the two-electron terms and may thus be non-negligible. For systems containing heavy atoms we use a pseudopotential treatment, where quasirelativistic pseudopotentials are included in the Kohn-Sham calculation whereas appropriate spin-orbit pseudopotentials are used in the perturbational treatment of the g-tensors. This approach is shown to provide results in good agreement with the all-electron treatment, at moderate computational cost. Due to the atomic nature of both mean-field all-electron and pseudopotential spin-orbit operators used, the two approaches may even be combined in one calculation. The atomic character of the spin-orbit operators may also be used to analyze the contributions of certain atoms to the paramagnetic terms of the g-tensors. The new methods have been applied to a wide variety of species, including small main group systems, aromatic radicals, as well as transition metal complexes. ER -
MALKINA, Olga L., Juha VAARA, Bernd SCHIMMELPFENNIG, Markéta MUNZAROVÁ, Vladimir G. MALKIN and Martin KAUPP. Density Functional Calculations of Electronic g-Tensors Using Spin-Orbit Pseudopotentials and Mean-Field All-Electron Spin-OrbitOperators. \textit{The Journal of the American Chemical Society}. Washington, D.C.: American Chemical Society, 2000, vol.~122, No~38, p.~9206-9218. ISSN~0002-7863.
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