About the cover

November 2013 Volume 8 No 11

The hunt for Majorana fermions continues as condensed-matter physicists try to prove that Majorana modes, in superconductor- semiconductor hybrid devices, obey non-Abelian exchange statistics. To test this, an exchange operation in which two Majorana fermions are moved around one another is needed, and this requires a network of nanowires. Single crystalline InSb nanocrosses — shown in a scanning electron microscope image on the cover — synthesized by Sebastien Plissard, Ilse van Weperen and colleagues are among the most promising material systems for the exchange of Majorana fermions.

Article p859

IMAGE: I. VAN WEPEREN AND S. R. PLISSARD

COVER DESIGN: ALEX WING

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