Electron localisation function in current-density-functional theory
Furness, James W. and Ekström, Ulf and Helgaker, Trygve and Teale, Andrew M. (2016) Electron localisation function in current-density-functional theory. Molecular Physics, 114 (7-8). pp. 1415-1422. ISSN 1362-3028
We present a generalisation of the electron localisation function (ELF) to current-density-functional theory as a descriptor for the properties of molecules in the presence of magnetic fields. The resulting current ELF (cELF) is examined for a range of small molecular systems in field strengths up to B0 = 235 kT (one atomic unit). The cELF clearly depicts the compression of the molecular electronic structure in the directions perpendicular to the applied field and exhibits a structure similar to that of the physical current densities. A topological analysis is performed to examine the changes in chemical bonding upon application of a magnetic field.
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