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Superconducting proximity effect and Majorana fermions at the surface of a topological insulator

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arxiv 0707.1692 v3 pith:KLJNCQ4E submitted 2007-07-11 cond-mat.mes-hall cond-mat.str-el

Superconducting proximity effect and Majorana fermions at the surface of a topological insulator

Liang Fu , C.L. Kane This is my paper
classification cond-mat.mes-hall cond-mat.str-el
keywords majoranainsulatorstatestopologicalbounddimensionaleffectfermions
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We study the proximity effect between an s-wave superconductor and the surface states of a strong topological insulator. The resulting two dimensional state resembles a spinless p_x+ip_y superconductor, but does not break time reversal symmetry. This state supports Majorana bound states at vortices. We show that linear junctions between superconductors mediated by the topological insulator form a non chiral 1 dimensional wire for Majorana fermions, and that circuits formed from these junctions provide a method for creating, manipulating and fusing Majorana bound states.

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Cited by 3 Pith papers

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    A synthetic-dimension Kitaev chain is realized in a 2D electron gas coupled to an LC resonator, enabling cavity-controlled Majorana zero modes for topological quantum computing.