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Título

First-principles calculation of the orbital magnetoelectric response

Autor Souza, Ivo ; Malashevich, Andrei; Coh, Sinisa; Vanderbilt, David
Fecha de publicación 2002
Citación CECAM Workshop (2012)
ResumenIn this talk I will survey the formalism for calculating the orbital magnetoelectric response of periodic insulators. The various terms that can generally be present will be described, as well as the special case of topological insulators, where only the so-called Chern-Simons contribution survives, and becomes quantized. A first-principles implementation based on computing the magnetization induced by a finite electric field will be used to determine the full magnetoelectric response of Cr2O3, including both the spin and orbital responses, and both the electronic and lattice-mediated parts of the response.
Descripción Trabajo presentado al CECAM Workshop on "Topological Insulators and Non-Perturbative Spin-Orbit Coupling" celebrado en Lausanne (Suiza) del 9 al 11 de Enero de 2012.
URI http://hdl.handle.net/10261/103187
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