This article has an erratum: [erratum]

Issue
EPL
Volume 93, Number 5, March 2011
Article Number 57006
Number of page(s) 5
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI http://dx.doi.org/10.1209/0295-5075/93/57006
Published online 10 March 2011

© EPLA, 2011