Quantum Theory of Orbital Magnetization and its Generalization to Interacting Systems

Details Quantum Theory of Orbital Magnetization and its Generalization to Interacting Systems Quantum Theory of Orbital Magnetization and its Generalization to Interacting Systems

2007-04-29

arxiv.org/abs/0704.3824v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Accepted by Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.99.197202

Based on standard perturbation theory, we present a full quantum derivation of the formula for the orbital magnetization in periodic systems. The derivation is generally valid for insulators with or without a Chern number, for metals at zero or finite temperatures, and at weak as well as strong magnetic fields. The formula is shown to be valid in the presence of electron-electron interaction, provided the one-electron energies and wave functions are calculated self-consistently within the framework of the exact current and spin density functional theory.

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