Superconductivity and Vortices in Topological Insulator Nanoribbons

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Credits/Names: 

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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Year of Research Highlight: 
2011
IRG: 
IRG 3 - Electrons in Confined Geometries