Dynamical matrix of two-dimensional electron crystals

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

In a quantizing magnetic field, the two-dimensional electron (2DEG) gas has a rich phase diagram with broken translational symmetry phases such as Wigner, bubble, and stripe crystals. In this paper, we derive a method to get the dynamical matrix of these crystals from a calculation of the density response function performed in the Generalized Random Phase Approximation (GRPA). We discuss the validity of our method by comparing the dynamical matrix calculated from the GRPA with that obtained from standard elasticity theory with the elastic coefficients obtained from a calculation of the deformation energy of the crystal.
Revised version published in Phys. Rev. B. 12 pages with 11 postscripts figures

Keywords

Mesoscale and Nanoscale Physics

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/156105

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0706.1488
 http://arxiv.org/abs/0706.1488
 R. Cote, M.-A. Lemonde, C. B. Doiron, and A. M. Ettouhami, Phys. Rev. B 77, 115303 (2008)
 doi:10.1103/PhysRevB.77.115303

Collections

arXiv