Superconductivity and Vortices in Topological Insulator Nanoribbons


D. M. Zhang, J. Wang, A. M. DaSilva, J. S. Lee, H. R. Gutierrez, M. H. W. Chan, J. K. Jain and N. Samarth, DMR-0820404

Interfacing topological insulators with superconductivity provides a possible route towards an analog of Majorana fermions in condensed matter. We have carried out two key steps in the search for these exotic quantum excitations. We demonstrated proximity-induced superconductivity in topological insulator (Bi2Se3) nanoribbons interfaced with super-conducting electrodes. We also provided tantalizing evidence for the possible presence of vortices in the topological insulator.

D. M. Zhang, et al., Phys. Rev. B 84, 165120 (2011)

Selected as Editor's Suggestion

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IRG 3 - Electrons in Confined Geometries