Scientific Reports 3, Article number: 1876 10.1038/srep01876 (2013); Published: May232013; Updated: December202013
This Article contains a typographical error in the Introduction section. “1 × 1014 carriers/cm2” was incorrectly given as “11014 carriers/cm2” and “1 × 1014 carriers/cm2” in the HTML and PDF versions of this Article respectively.
