Phys. Rev. Lett. 95, 137205 (2005) [4 pages]Orbital Magnetization in Periodic InsulatorsSee Also: Publisher's Note Received 20 May 2005; published 22 September 2005 Working in the Wannier representation, we derive an expression for the orbital magnetization of a periodic insulator. The magnetization is shown to be comprised of two contributions, an obvious one associated with the internal circulation of bulklike Wannier functions in the interior, and an unexpected one arising from net currents carried by Wannier functions near the surface. Each contribution can be expressed as a bulk property in terms of Bloch functions in a gauge-invariant way. Our expression is verified by comparing numerical tight-binding calculations for finite and periodic samples. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.95.137205
DOI:
10.1103/PhysRevLett.95.137205
PACS:
75.10.Lp, 73.20.At, 73.43.−f
See AlsoPublisher's Note: Di Xiao, Junren Shi, and Qian Niu, Publisher’s Note: Berry Phase Correction to Electron Density of States in Solids [Phys. Rev. Lett. 95, 137204 (2005)], Phys. Rev. Lett. 95, 169903 (2005). |
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