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April 2014 Volume 10 No 4

Bismuth selenide is a prototypical 3D topological insulator; its electronic spectrum features a Dirac cone populated by surface states. Now, it is experimentally and numerically shown that surface states are destroyed by a bandgap that forms beyond a certain critical compressive strain. Letter p294; News & Views p247

IMAGE: YING LIU, YAOYI LI AND LIAN LI

COVER DESIGN: ALLEN BEATTIE

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