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Proceedings Paper

Status of the search for majorana fermions in semiconductor nanowires (Conference Presentation)
Author(s): Sergey Frolov
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Paper Abstract

Tunneling spectroscopy measurements on one-dimensional superconducting hybrid materials have revealed signatures of Majorana fermions which are the edge states of a bulk topological superconducting phase. We couple strong spin-orbit semiconductor InSb nanowires to conventional superconductors (NbTiN, Al) to obtain additional signatures of Majorana fermions and to explore the topological phase transition. A potent alternative explanation for many of the recent experimental Majorana reports is that a non-topological Andreev state localizes near the end of a nanowire. We compare Andreev and Majorana modes a investigate ways to clearly distinguish the two phenomena. We are also exploring how Andreev states can be chained together along the nanowire to realize the one-dimensional Kitaev model, a discrete way of generating Majorana modes.

Paper Details

Date Published: 18 September 2018
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Proc. SPIE 10732, Spintronics XI, 107321O (18 September 2018); doi: 10.1117/12.2321220
Show Author Affiliations
Sergey Frolov, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 10732:
Spintronics XI
Henri-Jean Drouhin; Jean-Eric Wegrowe; Manijeh Razeghi; Henri Jaffrès, Editor(s)

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