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On the Use of Neumann's Principle for the Calculation of the Polarizability Tensor of Nanostructures

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Abstract:

The polarizability measures how the system responds to an applied electrical field. Computationally, there are many different ways to evaluate this tensorial quantity, some of which rely on the explicit use of the external perturbation and require several individual calculations to obtain the full tensor. In this work, we present some considerations about symmetry that allow us to take full advantage of Neumann's principle and decrease the number of calculations required by these methods. We illustrate the approach with two examples, the use of the symmetries in real space and in spin space in the calculation of the electrical or the spin response.

Keywords: ELECTRICAL RESPONSE; NEUMANN'S PRINCIPLE; SPIN RESPONSE; SYMMETRY; TIME-DEPENDENT DENSITY FUNCTIONAL THEORY

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2008.142

Publication date: 2008-07-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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