Detecting the Exchange Phase of Majorana Bound States in a Corbino Geometry Topological Josephson Junction.
Phys Rev Lett
; 115(24): 246403, 2015 Dec 11.
Article
em En
| MEDLINE
| ID: mdl-26705644
ABSTRACT
A phase from an adiabatic exchange of Majorana bound states (MBS) reveals their exotic anyonic nature. For detecting this exchange phase, we propose an experimental setup consisting of a Corbino geometry Josephson junction on the surface of a topological insulator, in which two MBS at zero energy can be created and rotated. We find that if a metallic tip is weakly coupled to a point on the junction, the time-averaged differential conductance of the tip-Majorana coupling shows peaks at the tip voltages eV=±(α-2πl)â/T_{J}, where α=π/2 is the exchange phase of the two circulating MBS, T_{J} is the half rotation time of MBS, and l an integer. This result constitutes a clear experimental signature of Majorana fermion exchange.
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MEDLINE
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En
Ano de publicação:
2015
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Article