Currents, kinetic energy, and molecular magnetism
Definitions of current density and kinetic energy density, for a general many-electron system in the presence of an external magnetic field, are carefully discussed and various results are established. In particular, the electronic energy expression has a purely classical interpretation in which every element of the ‘charge cloud’ behaves like a small magnet, the magnetization depending on the circulation of the induced currents.
Volume 134, 2022
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