Nature Communications 2: Article number: 272 10.1038/ncomms1273 (2011); Published: April122011; Updated: May222012.
This Article contains two typographical errors in the first and second paragraphs of the section entitled 'Diamagnetic response': '〈Bx〉ωL/γμ' should be '〈Bx〉=ωL/γμ' and '〈jab〉=〈(1/μ0) dBx/dz〉/≠0' should be '〈jab〉=〈(1/μ0) dBx/dz〉≠0'.