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Actinide Topological Insulator Materials with Strong Interaction

Science  23 Mar 2012:
Vol. 335, Issue 6075, pp. 1464-1466
DOI: 10.1126/science.1216184

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Abstract

Topological band insulators have recently been discovered in spin-orbit coupled two-and three-dimensional systems. We theoretically predict a class of topological insulators where interaction effects play a dominant role. In actinide elements, simple rocksalt compounds formed by Pu and Am lie on the boundary between metals and insulators. We show that interaction drives a quantum phase transition to a topological insulator phase with a single Dirac cone on the surface. These putative topological insulators may provide a setting for both applied and fundamental investigation.

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