Distinguishing Majorana zero modes from impurity states through time-resolved transport
Tuovinen, R., Perfetto, E., van Leeuwen, R., Stefanucci, G., & Sentef, M. A. (2019). Distinguishing Majorana zero modes from impurity states through time-resolved transport. New Journal of Physics, 21, Article 103038. https://doi.org/10.1088/1367-2630/ab4ab7
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New Journal of PhysicsAuthors
Date
2019Copyright
© 2019 The Author(s)
We study time-resolved charge transport in a superconducting nanowire using time-dependent Landauer–Büttiker theory. We find that the steady-state Majorana zero-bias conductance peak emerges transiently accompanied by characteristic oscillations after a bias-voltage quench. These oscillations are suppressed for trivial impurity states (IS) that otherwise show a similar steady-state signal as the Majorana zero mode (MZM). In addition, we find that Andreev bound states or quasi-Majorana states (QMS) in the topologically trivial bulk phase can give rise to a zero-bias conductance peak, also retaining the transient properties of the MZM. Our results imply that (1) time-resolved transport may be used as a probe to distinguish between the topological MZM and trivial IS; and (2) the QMS mimic the transient signatures of the topological MZMs.
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Institute of PhysicsISSN Search the Publication Forum
1367-2630Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/33951050
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Research Council of FinlandFunding program(s)
Academy Project, AoFAdditional information about funding
Academy of Finland (Project No. 317139)License
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